That is all fair points.
In my personal opinion, I think what irks me the most is that all of Bethesdas missteps are fairly easily fixable. They just seem to refuse to do so for some reason.
A bit more focus on the overall writing would go a long way and wouldn't have to interfere with the gameplay in the least for people who don't care. It's an intricate part of world-building for those that do enjoy it and serves to drive the player forward. Also helps the 'suspension of disbelief' and all that.
They don't need to reach the heights of the old CRPG makers of the 90's. Just make sure your "Antagonist" has a proper response when you put in an option to ask him Why he's doing what he's doing, you know? Stuff like that. As well as maybe not retconning the timeline of the universe just to fit an inconsequential quest-line and then recon it again in the next game... Stick to the established lore.
Secondly: Better implementation of a few new/borrowed features, like base building, that might fit the game. Instead of haphazardly throwing everything currently trending at the wall in the hope that some of it sticks. Take one thing and do it proper, otherwise just don't do it at all.
Then there's the Radiant-Quests in F4. This is just a poor excuse so as to not bother with making actual side-quests. There is a limit to how far they can execute their motto of "Keep it simple, stupid." This is one of those limits.
There's probably a couple of other things I'm forgetting. But I feel these little changes would help elevate Beth' just a bit out of the meme-pit they're currently in.