I am sorry if this has been suggested before, but just in case it has not:
I often use RADmin's (RAdmin Viewer 3.0 Beta) "scan for active RAdmin servers in this folder" button to check which systems are available. It happens, however the servers which are set to "Connect Through Host" do not show up as being available. I often need to connect to the server through which the others are accessibel so that I can see which ones are in fact available. So, considering all this it would be rather useful for RAdmin Viewer to actually disclose all systems which are in fact available, i.e. also including those available through the "connect through host" feature.
I hope the suggestion above is clear enough, if it is not please let me know and I'll try to explain it better.