Thought about this in the car, evil power of three au but within my Hawkfather au. (This is mostly pertaining to lion and jay bc I honestly don't know how to do holly in this yet)
Ok so, we established in my last post that despite everything- Hawkfrost still visits Leafpool in her dreams bc he wants to see her and be active in his kits lives (as much as he's physically able to as a ghost). So say that Leaf doesn't want him visiting his kits in their dreams anymore bc they start talking crazy (like Tigerstar type shi or whatever), and leafpool, after hearing them spew nonsense, is just like:
"???? No?? We don't talk like that. Where, or who did you hear this from???"
-side note: I think that Tigerstar maybe doesn't care for the three too much bc they're related to Firestar, but they're something that he can use and turn them against Fire. Literally doesn't matter as long as Firestar gets hurt in the end. So it's rare that they see him in their dreams. Also Also, this is in the case that the three know their true parentage, but the clans, especially bramble, don't know that the three aren't Squilf and Bramble's kits. Only ppl that know are the three, leaf, and squilf, of course (plus hawk and Tigerstar)
After Leafpool tells Hawkfrost off about telling their kits absolute nonsense, he's like: "idgaf" and keeps visiting them anyway.
Time passes, and eventually, they're apprentices, and this part goes along with canon as Lion still ends up training in the dark forest. As for Jay, either he gets trained and goes full evil or whatever OR he gets so fed up by dead cats telling him what to do (starclan is also in his ear and VERY persistent) and just becomes neutral, says, "Screw you guys" and just stays out of it completely. (ok not totally evil Pot this is sounding like evil lionblaze, but shhhhhh I didn't think this far and I'm tired💔).
Tigerstar probably gets Lion to kill Firestar or something and is like:
"Good job. You're my favorite grandchild."
"...yay..?" Lionblaze says, still mildly horrified that he killed his other grandfather.
-S.N: (I imagine Fire and Sand were very close with the three bc it's a crime that warriors doesn't acknowledge when cats are related via spending time with eachother and all that family stuff...also I don't remember fire ACTUALLY spending time with the three in the books)
"Now take over the clans and make them into one" or whatever his goal was (I think that's what it was...I gotta re-read this series man..)
Sorry this was so long I had to sort of organize my thoughts together, I'd love to see what else you guys think of and add to this au!