Honestly, my hope is that Mars Toys - and other companies - stay away from doing the "main figures" that official licensors have already covered (like regular Nicholson Joker).
For one, I'm assuming that their capacity - and the market - is limited, so I'd rather they produce the characters and alternate looks/outfits that aren't already available from the likes of Hot Toys, to maximize our options.
And secondly, I'd rather they not poke the bear and risk raising the ire of Hot Toys, etc. by producing directly competing - rather than complementary - products. These third party companies giving us characters and alternate looks/outfits that Hot Toys refuses to do has been a good thing for us these past few years, and I don't want that to be ruined for everyone in the future.