I don’t really feel like you can compare the two games. Starfield was a big scope with mostly procedurally generated content with a few handcrafted areas, which resulted in very repetitive content since they simply didn’t make enough variety in content. I feel like the procedural part and the ship and base building parts took a lot of resources away from other gameplay features, like a more interesting story or more engaing gameplay.
It also doesn’t help that Starfield still runs on an extremely outdated engine. Even if they updated it, there are still ridiculous limitations that shouldn’t even exist in this day and age. Just looking at Star Wars Outlaws gives a good impression how seamless stuff could’ve been in Starfield. Yet even entering a small shop or your ship requires a loading screen.
And on top of that the game just runs like absolute garbage on the old engine. When Todd Howard just answered with “just buy an RTX4000 card” it spoke volumes about the lack of optimisation that came with that game.
That last part is probably gonna be the biggest obstacle for Elder Scrolls 6, but having a handcrafted world will probably let them get away from a complete failure of a game already. Another obstacle might be to write an interesting story and characters, I frankly can’t remember anything from what I played in Starfield, it was generally just boring and Bethesda probably gambled on the open-world exploration experience offsetting that.
Also Bethesda needs to stop relying on mods saving the game for them, many basic functions are missing and I found myself often needing mods to have an even acceptable experience, especially with Fallout 4 and Starfield. It’s probably why Skyrim is still so popular, because there is that massive collection of mods out there.