I sometimes think that there should be some ... more obvious centralized ressource pointing to the various architectures, platforms and such.
Like a directory "images", and each architecture gets its own subthread ( allwinner A33 ; s905W ) there, and whenever an new installation directory is created ( like somebody swapping from yadisk to google drive, or somebody posting a new image on baidu ) a new posting is made.
I admit I suck at using the search, for when I look for "s905w .img" I get dozens of results, just none pointing to images for the s905w chipset.