Hi, thanks for the feedback and ideas! Mobile support was a bit too much for the jam but it's at the top of my list for the future.
I checked out your project. As a standalone bundle I think it's a good idea! I would pick a more straightforward name ("world builder" gives the idea of a map creation tool), like "Tiny Pixel Art Set". Or "pack", "bundle", etc.
Thanks again and good luck with your projects!