difference of dregora and normal rlcraft and is it worth it to play?

I am currently in late game in normal rlcraft and want to start again but instead start in dregora instead since I want something new and since its the "newest" version with some new retextures and loads of new stuff.

What is main differences of difficulty as I do know lots about the game now but still do struggle a whole load. Also is it worth playing and when are they planning to move the content to normal rlcraft or is it just exclusive content?