Many game servers have both Linux and Windows files, and with the ability to use an existing config as a template in TCAdmin, you can run those the game server on both Linux and Windows with pretty much the same configuration. I know you can allow the user to select either a datacenter or OS when ordering the server, and by doing that you can assign a different ID, but it's not what we're looking for. It would be pretty neat if you could input multiple ID's in the WHMCS module (example 9 and 10, seperated by commas (Minecraft Windows and Linux), and whatever server meets the 'Server Selection' settings, is the server where the game server will be created - no matter what OS.
Feedback on this idea would be much appreciated.