Collections are fine, but I would rather have users select 1-5 of their personal favorites to make up the 50 preinstalled, you would have to provide the link in which you obtained them so I could verify use permissions.
I love the default 50 wallpapers in LXLE. I think I recognise some of the locations, but I'm not certain. Where can i find a list of the photo locations (captions, titles) ? Thanks!