This sounds pretty amazing and something I see being a wave of the future of gaming. A volunteer based modding community TESRenewal is working on a major project called Skyblivion that will add the entirety of the game ES Oblivion, map and quests, into the Skyrim and Skyrim SE versions. They say it won't be released for a couple of years, maybe 2025 and looks to be for PC only. This is something very unique and I think it may spur more communities to get involved with mods of older games to integrate into newer sequels. Wow!!!! They are also looking for volunteers who have development skills. I'm sure this is very exciting for fans of the series.
https://skyblivion.com