One of my biggest wishes for the Buddie canon episode is that we get something like the Greys Anatomy episode of S12. Now, for those who don't know, it was the episode where April and Jackson (one of the most popular ships of Greys) finalize their divorce, and it was an episode full of moments from their relationship and before that we hadn't seen before and it basically contextualizes where they were in their relationship by that episode.
Now, of course that episode is about the end of their relationship, I think 911 could do something similar, only it's about the relationship Buck and Eddie have already built throughout the years, little unseen moments like watching Buck from Eddie's perspective in S2E1, Buck's feelings about Eddie putting him in his will, Buck changing Eddie's bandages after the shooting, Eddie feeling like he's losing a spouse all over again while Buck is in the coma, but not understanding why he feels that way, Eddie feeling jealous of Tommy but never saying anything out loud about it bc he promised Buck this won't change things between them, things like that.