Given that the show made Daniel's identity as a journalist a much bigger part of his character, I think it'd be really fun if, assuming we ever get past DM, we had a scene or two that implies that, as a couple or when they are still getting to know each other, Armand sometimes tags along and even helps Daniel investigate stories. I think it could be a really useful writing device because it would let them explore a lot of different aspects of their dynamic and characters at once.
It could show how good a team they are and how well they understand each other. There's a reason detective partners like Holmes and Watson have such an appealing romantic dynamic in fiction. Daniel and Armand have completely different skill sets and ways of approaching people, so watching them investigate something together could show how naturally they complement each other.
It could show how much Armand values Daniel's humanity and his interest in people. Armand isn't just tolerating Daniel's human interests while romancing him. It's part of what attracts him to Daniel, much like how he enjoyed watching Lestat act or listening to Louis talk about the art scene. He genuinely takes an interest in what Daniel cares about, and Daniel could also function as a bridge between Armand and ordinary human life and the modern world.
It'd be a great opportunity for witty back-and-forth and philosophical conversations. They could argue about their completely different worldviews over things that have nothing to do with vampirism, at least explicitly, or use the case as an excuse to get into those "gradations of evil" conversations, like the ones Louis and Armand had in Paris while they were bonding.
If Armand uses his powers to help with the investigation, it'd be a great way to show both how much Daniel covets vampirism and how alluring Armand is to him. We could see how Daniel thinks of all of Armand's supernatural abilities as basically a cheat code for life, especially from the perspective of a journalist who spends his life relying on observation and investigation. It'd also be a fun opportunity to show off Armand's powers to the audience without it feeling like a random powers showcase.
If Armand plays around by pretending to be someone else, adopting a different attitude or accent, that could do a lot to show off his personality. It'd be a nod to his theatre-kid days and fake Rashid, while also showing how adaptive and chameleon-like he is and has had to learn to be, and that he's skillful outside of his vampire tricks. And it could be a really fun way to show how playful and mischievous both of them can get together, and how they bring the youth and fun out of each other.
On that same note, it'd give us a chance to see them actually having fun together. Not everything has to be angst or intense romance. They could just enjoy themselves, get into trouble, make each other laugh, and have these little adventures that become memories they share. That kind of thing can make a relationship feel much more lived-in.
It'd also give Daniel opportunities to impress Armand with his wit, intelligence, and passion. Daniel is clearly someone who wants to be recognized for his intellect. I think it'd be fun to see Daniel getting excited when he figures something out in front of Armand, or deliberately trying to impress him because he wants Armand to be into him. I can easily imagine him thinking that he doesn't bring that much to the table for someone as powerful and otherworldly as Armand, so he works extra hard to impress him and make himself feel valuable to him. It'd be nice to see Daniel not need to be a vampire to be competent, either.
It could establish how much Daniel cares about his career, and how tied it is to his identity, and show that he doesn't want to abandon it just because Armand has entered his life. Which would make it hit much harder if he eventually reaches a point where he's willing to give up journalism to become a vampire and stay with Armand, especially if Armand doesn't actually want him to make that sacrifice because he sees Daniel's passion as tied to his humanity.
It could also expose Armand to some really heavy aspects of his own past. Daniel's investigations could involve some genuinely awful subjects, like a sexual trafficking network or a wealthy pedophile, and it could become apparent that the subject affects Armand far more deeply than it should. Maybe Daniel notices that something is wrong and is understanding and careful about it, or maybe he's frustrated because he doesn't understand why Armand suddenly shuts him out. Either way, it could give us glimpses into Armand's past without requiring him to sit down and explain his entire trauma history.
It's also a good opportunity to explore some of the political and cultural aspects of the times, depending on what they're investigating. That could bring out interesting aspects of their personalities, histories, and values as people, while also giving Daniel and Armand things to disagree or bond over that aren't directly related to being vampires.
If them tagging along for investigations is a recurring motif, it could help show how their relationship evolves or devolves over time. You could have the same basic setup mean something completely different depending on where they are with each other. Maybe early on, they're constantly surprising each other and learning how the other thinks; later, they're so in sync that they barely need to communicate; and if things start going wrong between them, you could see the teamwork and understanding deteriorate along with the relationship. It could become a really subtle way of showing how much they know or don't know about each other at different points.
It would also give them something to do that feels less random than some of the things they do in the DM chapter, without losing that sense of randomness and fun. I do think the randomness of what they do in that chapter is part of the point and part of the fun, but if the show doesn't plan to spend a ton of screen time on them or rely on extremely long montages, this could be a way to preserve that random and episodic feeling while giving it a stronger grounding. Investigating a story can still basically amount to "put these two guys in some random situation and see what happens," but it's grounded in something we already know one of them is invested in: Daniel's journalism.
Anyway, I just think this could be a device that does a lot of heavy lifting. It gives them a reason to spend time together, lets us see their compatibility in action, gives them opportunities to talk about things outside of their relationship, showcases Armand's powers and Daniel's humanity and his smarts, and can even create opportunities for conflict or reveal things about Armand's past. And if it's a recurring motif, it can also quietly track the evolution of their relationship without the show having to constantly stop and announce how their dynamic has changed. At the same time, it gives the show an excuse to throw them into weird, funny, dramatic, or even disturbing situations without those situations feeling completely arbitrary. All of that could potentially be done in just a few scenes and very little screen time, which makes it a really useful writing tool for developing both of them.
