I would love to see an edit mode for player, party and raid frames. Usually until you have a buff, debuff, are in a party or a raid you can clear see how the UI looks and only then can you really positions them where you want. Usually in addons like Perl and ElveUI there is a really nice way to see how everything would look, i think this could make your addon way more sought after since people tend to want to edit things out not as they come out, but right from the start.