Looking to Mod

Hi fellow Subnautica players. I'm looking to Mod Subnautica to keep me busy until SN2 either is complete or more content gets added.

I've done about 2-3 vanilla survival mode playthroughs already (1 finished, and 2 endless) but i'm looking to add a challenge on my next playthrough that is somewhere between Hardcore and Survival (I don't like one life having to start over), aswell as add new content and QoL improvements and really focus on base building this time (most of the time i'm either just using cyclops or build a long glass base at Tree Cove)

also I've never play BZ either and open to modding that one aswell for a first playthrough (haven't played it because of how everyone saying SN1 is just better).