Ranking the C4 characters based on how much I want them to be in a party with Wick after the convergence:
Occtis: I need these two to circle each other like stray cats for a full arc and come out the other side best friends, lovers, or the worst enemies at the table.
Thaisha: I actually think Thaisha would be the character most helpful to Wick's development. They're actually fairly similar in a lot of ways, even down to their "call-to-adventure" moments being sparked by falling in love with an actor. I think she'd be able to encourage him to be more confident without it seeming like Tyranny or Teor blindly hyping him up.
Azune: My beautiful sad boys. They have such an interesting parallelism with so much about Azune being so deeply embroiled in lies and deception while Wick is unable to lie to save his life, plus Azune's themes regarding family and Wick's desire to burn his family (or at least his grandmother and her influence) to the ground. They're interesting reflections of each other in a way that's not immediately obvious.
Thimble: I love you Wimble you'll always be my favorite.
Julien: I think Julien would be helpful to Wick's development similarly to Thaisha, but in his case it would be from constantly ragebaiting Wick out of his passiveness.
Vaelus: They have so many interesting similarities in their stories and loss of faith, but they just NEVER INTERACT FOR SOME REASON.
Murray: Murray and Wick are such polar opposite characters. Rich vs Poor. Wizard vs Sorcerer. Brilliant Academic vs Wick. They'd just be such interesting characters to see interact long term. Plus Sam's usual ragebaiting of Marisha would be especially funny here.
Bolaire: Bolaire seeing Wick's potential and turning him into a project/potential asset to mentor would be really fun to see.
Teor, Hal, Katt: I like Wick's interactions with all of them but none of them really bring the interesting story potential that I see with the other characters, imo.
Tyranny: I love Tyr and Wick so much, but I NEED them to have a separation arc so that they can grow as people outside of each other and be reunited on the other side as more whole individuals.