I'm not responsible for hosting external data (covers, banners, themes). it would require people to submit their files to me in order to put them in proper places. I can't manage that.
if you choose to upload them to gbatemp's filetrip or download center (or another place), it'll be a backup for users. and if at the same time, it can be seen by the loader it's just a bonus. but like I said it might not be possible anymore due to memory constrain so don't choose a host based on an hypothetical possible the loader's feature.
anyway, thank you for your time doing the backup for other users
I'll ask Costello if we can add a new theme section on Wii download, or maybe child of wii loaders.
edit:
Actually, there are already themes for other loaders posted in this category, you can upload them here too:
https://gbatemp.net/download/categories/other-files.166/
if there's a preview picture, that'll be even better.