It can be annoying to seek big files to go to the exact time you want if the recorded file is very big and has several hours of recording. Also for eventually editing the recorded files if it's several gigabytes, and it can easily be for HD channels left on record for some hours, it can be hard to manage such files. So I suggest an option to being able to use split files, by size or, why not, by recording time. splits of 1, 2, 4 gigas or splits by hour/half an hour wud be just perfect.
And since I'm at it I tested the leaked beta

The only thing I miss, but I suppose it's on your TODO list

Also, and not very important, when disabling the video (renderless mode) the image is not erased from the viewing window. Don't know if it's intended that way but I wud prefer that it be erased when disabling it. Otherwise it gives me the impression that the application got frozen and has crashed

Regards