The one HDMI per screen thing is because Virtual Desktop simply output your actual computer screens in VR.
There is nothing stopping you from using one huge screen with transparent background and a bunch of windows.
There is nothing stopping you from using one huge screen with transparent background and a bunch of windows.
You only require the HDMI port used by the Rift. Everything else is rendered as a texture inside the virtual environment. That works today, you can have multiple screens floating around, your Windows desktop, etc.