I can agree to some degree that choices weren't nearly as interesting, but I believe that had more to do with a failure to create a compelling story. I still believe in terms of freedom and choice TES is the best role playing experience. BioWare games and CDPR really confine you to a few roles that you are forced to play like traditional MMORPGs.
It comes down to staff, funding, time, and priorities. BGS enjoys making large games. With Skyrim, they had 100 members in their studio. Compared to some of these studios, including BioWare, their team is incredibly small. With that understood, it's clearly a time issue as there was plenty we know was supposed to be in the game that was either cut or released later as free content or DLC.
We are certainly allowed to have diverging opinions. I will agree that BioWare has better stories in their games, but that's what they focus on I also think BioWare games have lacked in terms of character progression and scale of environments. DAI is trying to rectify that. I wouldn't be surprised if Fallout 4 will try and rectify BGS' long history or poor storytelling. Certainly, BGS has always done a phenomenal job, in my opinion, of building large, persistent worlds worth exploring.
Yeah, but to me the problem with exploration is that once you did it, well, there's not much more to add. You saw dungeon X, you did quest Y, you don't need to do it again. Besides, at some point, once you saw enough one Draugr-infested barrows, you saw them all. There's only so many randomly generated enemies and content you can face before it loses all novelty and simply consists of you going through the motions. That's another advantage of hand-placed encounters.
Roleplaying depth, however, allows for far more replayability. New Vegas alone warrants 3 playthroughs, for each major factions (NCR, Legion, House/ Yes Man) because things are so different each time around. A Legion playthrough especially makes you persona non grata in a big part of the map, so you're fighting a lot more. By contrast, a Yes Man playthrough means everyone can like you until the very end where you backstab everybody and assume direct control in a way no Bethesda (or even Bioware) game has ever allowed you to. Yes, I really, really like New Vegas. Far more than FO3 with its crap story, boring BoS and non-existent difficulty.
By contrast, in Skyrim, being a known Imperial supporter that is days away from sieging (well, wildly running with 10 NPCs into the streets of) Windhelm never stops you from waltzing into Ulfric Stormcloak's throne room and chatting with the man like if you didn't massacre his entire army by yourself. That was a pretty major mood killing moment for me. It's as if the Warden in Origins could just walk into Fort Drakon and play Pazaak with Loghain.