I will work with anyone that wishes to help improve the MythTV experience in LMCE to integrate their work. I'm sure that tschak would do the same. But atm I don't think any of the devs are using MythTV, so it will fall to those that are using it to work to improve that experience.
I can try to help test. If any devs can make use of a tuner card, I have one or two spare ones that I'll donate. I need cable card for my provider.