Starfield

I usually don't feel like anything is fundamentally missing from Bethesda games, it's usually that there's so much raw potential and such a strong foundation that what you can add is essentially limitless. If Starfield lacks ocean biomes or excessive verticality I wouldn't feel it was "missing" that per se because of how much sheer content is across the rest of the game. Spread more broadly instead of deeply, something id more expect in an iterative sequel rather than a beginning for a new IP.

I have, across all Skyrim releases, probably close to 1,000 hours in it, which is a lot for me, I usually clock in at around 200-300 in other large open world games.

If Skyrim didn't have mods I feel my hours played would be closer to the 200-300 of other games like that, but due to mods it's extended that far beyond its natural life. I don't think most games are capable of sustaining my attention for that long, and in most cases, unless it's due to challenge like Monster Hunter, I don't think you can healthily expect a single player playable game to deliver 1,000 hours of content, a game that provides even a fraction of that I would consider "complete".

But a lot of people have particular definitions for what complete means based off previous games in the series or how they feel certain aspects of the mechanics or content were executed.