This is probably the one feature people have been asking about the most, and since it is purely cosmetically animations it all falls on my table.
I think it's hard for people to grasp how much work even a slight modification of the sprite would involve, so I decied to count the amount of frames the main character sprite has right now. I ended up with 1365 unique frames, which includes all facing directions (down, up and the sides). Since the game is still in beta, there's still a lot of animations missing, so the final number of frames would probably end up closer to 2000.
Doing a modification to the sprite means modifying all of the hand made 1365 frames, one by one. It is possible, of course, but it is incredibly time consuming.
Adding armors and other visible gear is also tricky because of the way I have constructed the sprites. The body does a lot of twisting and turning, meaning you could not just place a static armor sprite on the character and have it look good. You would have to actually animate the armor sprite itself, which also would be extremely time consuming, especially considering you would probably need to make hundreds of different gears.
When we started this project I chose to focus more on detailed and fluid animations than customization, because of my love for well animated games. A game like Terraria for example has taken the other route, with very simple clip doll animations that opens up the doors for very easy customization. You can't have both, without having a huge team behind you and/or a lot of cash. Neither of which we have at the moment!
I'm not saying different body types or character modifications are out of the question, but it will probably be the very last thing I add to the game.
Hopefully this clears things up a bit. I would love to have this feature in the game myself, but I would also like this game to come out before I turn 60 ;D