It'd be nice to alter the size of the thumbnail that displays in the login module once logged in. I'm using a small area to put the mod_cblogin module so the thumbs need to be small to fit, but I like a larger thumb for the lists and other stuff. The same file could be used, it's just be a matter of adding some fields to the backend "width" and "height" and the larger file would be squished appropriately.
CB 2.3, CBsubs 4.3, PHP 7.1, J! 3.9.X