I've been thinking about how the EzUHF is full duplex... and has the capability to transmit data back down to the ground. It's also connected via i2c to the EzOSD's GPS onboard... which could be handy.
What I'd like to buy someday is a system where the On Screen Display happens on the ground. The GPS part of EzOSD would still be in the air, and EzUHF would transmit all telemetry to the ground more reliably than depending on a audio / video link. All you need then is an artificial horizon, and customers could fly IFR even when the video link fails for longish periods of time.