Not a big fan of conversions. I really meant tilesets specifically made for your SP pack, but I could live with custom sets with innovative eye candy (just stay away from the default tilesets if anything). Also, an original story would be refreshing, but I'm not going to download something just because of that. What I had in mind were things like new concepts (like the flying rock) and inventive puzzles. By the way, if you're going use puzzles, please stay away from the random guessing games. I would prefer not to have to choose a random warp or something just to get to the next part of the level.