The reason why we don't want to have too many more public room mods is that we don't want the room creation screen to look like the one for the ETs:
https://puu.sh/J0udr/408dde35eb.jpg
And with every new (public) room mod the screen gets a little worse. We're at a point where we really have to think twice if we should add another room mod (or perhaps remove old/unused ones first).