If you ever play Oblivion there's nothing wrong with the sneak, stamina, block or HUD elements. The HUD was quite possibly one of the better ones out of the entire series. Skyrim was such a down grade.

The major complaint with Oblivion was the leveling system mainly because people love to min Max and wanted all 5's. Honestly if you just played it without the idea of you having to get all fives consuming your gameplay I thought the leveling system was completely fine.

Not sure why people think you can't have mods on unreal Conan exiles is a small example of having a ton of mods. There's a plug-in you can use for unreal that's the equivalent of the construction set by Bethesda. Both physics and rendering is superior on unreal versus gamebyro. I'm glad they're dropping that old engine if true because for the few people who have used both engines myself included there's a crazy amount of annoying game engine limitations on gamebyro aka the creation engine.