All great questions. Depending on the artist I would like to give the option of commission based or royalty percentage on whatever platform my game is on (Steam, gamejolt, etc) Though NSFW isn't my main reason for the game I would be creating a DLC that gives the player the option.
As far as the character look I'm going for reference the game "Indivisble."
The game will be a 2D Anime Platformer mystery adventure.