I've never really felt like the dialogue choices in any Bethesda game save maybe new vegas (which I don't even think was technically a Bethesda game) had a lot of real impact on the game. In Skyrim I think there were maybe a handful of times that it mattered. Most times in those types of games I wind up exercising the entire dialogue tree because usually it lets you, and sometimes that's the only way to get some side quest or whatever.

The combat in Bethesda games save some of the Fallout series is actually pretty bad IMO. In Skyrim, the combat doesn't feel like combat at all and feels more like two characters swiping air near each other.

The thing that's the most disappointing about most of these games to me is the squandered potential. At first there feels like there's depth there, and if you try to get there it is shown to be a facade.

They have a lot of breadth to their games but IMO they're as deep as a puddle.