Off the top of my head:
1) Silicon Dust Prime support (even if it can't support DRM'd channels) and all their new tuners
2) Automatic file conversion in full 1080p/1080i with 5.1 audio in-tact.
3) The ability to export/convert to one file that plays on all iOS devices (with stereo and 5.1 channel audio)
4) Tag the raw mpeg 2 files with the correct meta data
5) Add the ability to automatically fetch over the air EPG data and schedule recordings by name without a TV guide subscription
6) tvOS app