It would be great if you could implement this, in a near future. Right now NPVR I like to use the most for preprogrammed recordings, but the 4.0 profile, I'm not too excited. Unless someone prouved me there isn't much differance...
In a break with my neither confirm nor deny policy towards future release, but there may be some settings in the config.xml for the next release to control this type of stuff. Not worth putting settings in the UI - most people will never need them.