I'm new so I apologize ahead for anything that I may say that causes confusion or arguements. I was wondering if it's possible to get older games such as daggerfall to be revamped so that the graphics are improved, the glitches and bugs are fixed without tons of individual patches and some small changes made to the game such as a style of fighting that is like skyrim. It would be interesting to see a non mmo game that was still very large and intricate.

To do what you describe, you'd pretty much be making an entirely new game from scratch. None of the assets could be reused and the old engine would be no use (even if you had the sourcecode, it's a buggy, ancient mess).

Writing a new engine that does exactly the same stuff, but better? That can be done, could be far less buggy than the original, and may yield limited graphical improvements (it'd still be 90s graphics, but with some modern tricks thrown in). In fact, if you look up XL Engine/DaggerXl, you'll find someone's been chipping away at exactly that.