This suggestion will be for the world generation category. My suggestion is that, 1 "MineStation" spaens somewhere underground, under at least 30 blocks above bedrock.. This Minestation can contain 1-3 chests, and has a rare chance "around 1/10" of having a nether reactor allready set up inside of it. This would be great in my opinion because, we dont have rails right now, but we dont have any natural generated structures. Dungeons havent even been discused if im correct. This would provide a goal that players will want to do.
Hope you enjoy.
https://www.youtube.com/channel/UCa93KxrY1AP58dvYBIv2q3Q my YouTube channel