I was testing Radmin 3.1 lately. Indeed the new version is very improved comparing to v2. It may have taken quite a while but at the end, nice work guys.
I have a small idea i believe it would improve Radmin even more. When in full screen mode, it would be nice if the toolbar that appears there could be arranged vertically (perhaps by rightclicking on it and selecting "vertical arrangement" from a menu). My laptop has a wide screen so most of the time, the toolbar gets over the remote PC's screen while at the left and right of the screen there is much blank and unused space.