Shoutbox

for many (if not most) dialogs that would require to create the whole Plus! interface on your own as many stuff changes according to what is pressed/selected/etc.... The only thing you could use is the layout of existing dialogs. Everything else must be recreated by yourself. Not only that, but this is again very version depended. All in all, you would end up with a copy of Plus!, the difference being that this "copy" wouldn't be functional in messenger...

In short, idea is not new, but in practice this is way to much useless work for something you could easly do in Plus! itself already.