On the one hand it is cool to add custom designs yourself, but Intrepid doesn't want a bunch of dickpicks in the wild.
So what about a platform where you can upload a design, or another way to access it, so the Intrepid team can go trough them
beforehand and then allow them into the game. Offcourse there would be
requirements. like: We want this adobe file, this resolution, these kind off textures, it should be done with x, y and z. I am no designer so i have no idea what i'm talking about, but you get the picture. Basicly it's free labor and the players get (kinda) what they want. You could work with a reddit-style vote system what is most wanted, what should be looked at. Offcourse Interpid can veto stuff, can play around with it. bonus: could do the same with other things as well. Mobs (3D moddled)? concept art?
Next level Community-involvment? Just thinking out loud here