Since Hyperion has an R200 driver for OS4, and they want to continue to develop OS3.1, why not push them to support the R200?
After all, OS4 supports the mediator, why shouldn't OS3.1?
If you wait for Elbox to do it....well we all know how long that wait could be (and we're not getting any younger).
Out of curiosity, can you even buy an R200-series card that physically fits in a Mediator? I thought they were PCI only? Or are you talking about doing it with adapters?