-It was released with way too many bugs!
-You can't pick themes for your house, not a big deal at all, it was just nice in FO3
-Fast travel, I choose not to anyways, but just that it's there tempts me sometimes...
-No XP reward for playing on high difficulty...
Bethesda didn't make this game, Obsidian made it so you can't blame them for not putting in themes, Altough the rest i agree with, Look at his post, hes talking about in-game problems like, he said that he hated the Slot machines