BuddyPress.org

Simple revisions via adding some styles in active theme’s style.css file
#1 can be addressed by adding `{ display: none; }` to specific widget’s avatar image
#2 which list are you referring to? In any case, add missing styles for the the overlapping images in lists with something like `{ float: left; clear: left; }` specific to the list ID or class
#3 can add styling like `body.members img.avatar { width: 35px; height: 35px; }`