A slight expansion on a request markimus made ("PuttyCM-like tab drag/drop")... it would be fantastic if mRemoteNG could support docking/undocking of tabs in the manner firefox does. Drag a tab to another mRemoteNG window, and the tab moves. Drag it to the desktop, and it automatically creates a new mRemoteNG window to house it. Drag away the only remaining tab in a window, and the window is automatically closed.
This would make easy side-by-side comparison of output generated in 2 separate sessions: temporarily undock one, then re-dock after the comparison.