Quite a shame this but from what I've heard this series has been static for a while it's not that it's bad but that each game hasn't moved the series forward at all, MS has this issue where they have some trouble keeping their main flagship titles consistent over a period of time. I'm not entirely convinced that simply buying studios will fix their problems because they've been doing that for a while you need to know how to handle each studio to get the best from them otherwise the won't be good synergy like what ended up happening with Rare and eventually Lionhead.