Potential acquisitions I could think of (that are all at least somewhat realistic)
Playdead
Ready at Dawn
Asobo
Crytek
Turtle Rock
IO
Double Fine
Splash Damage
Ruffian
Typhoon
Iron Galaxy
Piranha
DONTNOD
Moon
4A
Giant Sparrow
Night School
Odd Tales
Sumo Digital
Certain Affinity
Housemarque
Mistwalker
Aurora44
Capybara
Hazelight
Armature
Deck13
People Can Fly
Thatgamecompany
Studio MDHR
Relic
Techland
Bluepoint
If you could add 3 of these studios to Xbox Game Studios, which 3 would you choose?
Out of the ones you mentioned I would take Moon, DONTNOD, and IO because they are each very talented and could do amazing things with more resources. I'd add Asobo as a bonus.
Mistwalker would be great if they let Sakaguchi build out a multi-team studio, but I'm not even sure what he's doing these days.
All that said, I think we could get one acqusition tomorrow. I don't think MS wants to keep setting the expectation of multiple studio acquisitions for every E3.