Since most of the new updates are free for everyone, most of the premium features are staying premium while the game is in active development.
A bland protagonist was my original goal lol. The idea is shaping a party to compensate for you being some regular human. I do plan on adding some extra stuff later but that'll involve defeating the Huge tier bosses yet to be added to the game.
Mapping caves is a reasonable ask and simple feature to make, but I'm a dick >:)
Also, the subscription gets you my other vore game Deckbiter too. Please give that a try as well if you've got the time :)