im fine with both but it depends on what that game needs

Some graphics stand the test of time, others become a jumbled mess to our modern eyes but it all feels fine mechanically, feel free to just bring those up if the mechanics are all still passable.

But yeah old controls can be jank, sometimes a game needs a mechanical remaster, ai improved, and bugs removed.

Just make the game open to modding though, and if it's good people will make graphics remasters for you, for free.