Apparently the big problem is that Todd Howard is the creative director for all 3 franchises. While he's good at that role, he's constantly getting pulled between the 3 series, limiting his ability to maintain a cohesive vision for any 1 game.

Plus there's way more people in the studio, so while coworkers talked to each other a lot in the past (even on lunch breaks) there's simply too may people to have that close of a relationsip with anymore