If I were MS and this deal goes through I'd immediately greenlight
Minecraft Star Wars - First of many cross-licensed titles, taking a page out of LEGO's book. Even Angry Birds got a Star Wars crossover so this is a no brainer. XB1/360/Windows Mobile/PC available on day 1, iOS/Android versions coming 1-2 months later. Would start working on deals with other IP too, like Hobbit/LOTR, Indiana Jones, Avengers/Marvel, Disney, etc.
Minecraft Halo DLC - Free of charge for X1/360/iOS/Android, obviously not available on Playstation versions.
Minecraft Kart Racing - Would definitely start development of this asap.