Wasn't it almost complete anyways?
Far from it if anything the dev has stated in the past is to be believed. Of what I currently remember he still has to:
-Create a clothing system + more clothes (This is supposedly upcoming)
-Add threesome wild sex
-Make slimes their own race and create them, likely using that slime chick in the sewers instead of capturing them, every race will have a slime variant
-Further adjust the stat system (This is supposedly upcoming)
-Create a deeper economy system
-Create a crafting system using fluids to create items that can effect appearance, traits, or both
-Add more named characters, including the goddess the angel talks about
-Speaking of the angel... he had plans to make her eventually abandon her stoic personality via the players actions
-Add more hybrids and wild nephelym
All I can think of at the moment. That said, it could be he's abandoned many of those ideas but back when he communicated on discord those were some things he mentioned wanting to add. I think the main thing coming up, according to Badaxe93 - one of this games discord moderators - is a change to the stats and traits but I've no idea what that entails.