From a purely game point of view, this won't change much for me, since I'm a PC gamer also, but this a pretty insane get for Microsoft with all the games they just acquired. Something I'd like to see is maybe a slight restructure of their Call of Duty games, less of a yearly pump, take companies out of the Call of Duty mines, and put them back into other games like Tony Hawk and Crash Bandicoot.
Something cool I saw from someone, is that they could get Toys For Bob to make Banjo-Kazooie stuff alongside Crash Bandicoot, which would be amazing to get remakes of the first two games and the chance of a new one lol