I am also disappointed that desktop video has been removed. Compatibility with the Color app is no longer a real concern. The App and FCP studio 3.0 are at end of life.
I -think- Aja still supports this important feature on their excellent Kona card series, and is all else fails, a Matrox or Aja scan converter will do a great job doing what Black Magic does not (or will not) do.
I must rethink my choices of vendors in the future.