If MS were to be developing 4 additional IPs, what studios would they be using?
United States
Connected Experiences – Untitled Project – Design Large scale multiplayer title and help other first party studios
Good Science Studio – Kinect Adventures, Kinect Fun Labs
Kids and Lifestyle Entertainment – Next generation fitness project
Microsoft Studios – Los Angeles – Next generation core cinematic title
Microsoft Studios – Mobile Gaming – ilomilo
Platform Next Studios – Next generation core title
Playful Learning – Next generation family project
Skybox Sports – Next generation sports project
Turn 10 Studios – Forza Motorsport series - (2 team studio)
Twisted Pixel Games – The Gunstringer, LocoCycle - (2 team studio)
Xbox Live Productions – South Park Let's Go Tower Defense Play!, South Park: Tenorman's Revenge, Avatar Kinect
Europe
Lionhead Studios – Fable series, Black & White series, Unannounced MMO-like New IP - (2 team studio)
Lift London – Multiple Cloud Based gaming projects
Rare Ltd. – Banjo-Kazooie series, Viva Piñata, Perfect Dark series, Kinect Sports series- (3 team studio)
Soho Productions – Kinect Sesame Street TV
Press Play – Untitled Project[24]
Canada
BigPark – Joy Ride series, Kinect Sports: Season Two
Black Tusk Studios – Untitled Project - (2 team studio)
Microsoft Studios Victoria – Untitled Project
This is just a copy paste from Wikipedia(so accuracy is obviously suspect considering most do not have citations) and I removed obvious ones that would not be making new IP like 343i and the liaison teams.