My only suggestion would be; "Why haven't you created any cosmetic items for X Hero?" Heroes that are available for cosmetic items are listed here. If there hero isn't in this list it isn't in the importer tool in game and can't be uploaded to the workshop. I can see that question coming up a bit.
The new agreement is short, I'd suggest reading it through thoroughly. But its at the end. Also good call on the "why has X hero not got love" questions!
Good idea to make this open so some common artists can get themselves in the picture and maybe can answer some questions from a complete different view. because lets face it were not all professional artists that can dedicate all their time to making workshop items. The problem only is that don't expect some really good…