I could really use this. I have linux computers to support but there is no good software for securely and visually login remotely without massive configuration of each machine.
We now have to go out and pay for some other solution :(
I am a programmer myself and would be happy to beta test the linux host. We run linux mint with XFCE on all these machines which is an easy to work with window manager. It's the only window manager that x2go reliably works on.
Please note that Host for Linux is already available for alpha preview. It's somewhat limited in functionality since it's an alpha preview, but we'll be adding more features during the beta version releases. You can find the download link and installation instructions in this thread.