An oddity about Ada's name
I mean, obviously it's for the players, but it doesn't quite make sense - in my opinion - for Ada to continue using that name. In the OG RE3, one of the epilogues involves her "casting the name aside" since she's finished the Raccoon City chapter.
I guess for RE4 it could be stretched to say "ah she kept it as a little nod to who she's working for" - but then in 6 and Damnation she's still using it.
Personally, I think it would've been a bit comedic and fun if in RE4 when Leon greeted her with "Ada", and she responded with "Actually, it's <name> now. Ada died in Raccoon City, remember?" And then in RE6, could further the comedy with him going "so what is it this time?" and she teases him for "forgetting her name" or something? I think it'd have strengthened their dynamic and made her a more... believable? spy.
Anyway, exhausted 'tism ramblings about how she should've changed up her name. Even if not a totally new name, could be fun for her to change it up to other last names too. Maybe she uses Ada Kennedy at one point just to fuck with Leon.