everyone involved with developing mlvapp should be very proud.
i can't wait to see where it will go... especially with nodes and receipt slots!

seriously, it's already a great program, and i really enjoyed grading with it.
btw, if you recall the demosaicing challenged shot with the wires, i managed to completely overcome the problem... here's how:
in mlvapp, i downscaled the shot from 3072 to 1920 using sinc
then i loaded it into virtualdub and first, resized it to 3840, and then used the "high quality" half resolution filter to drop it back to 1920 as part of the conversion to 10 bit x.264
no more problems with that shot, and it also improved the demosaicing on some patch cables hanging on the wall beside the night light in the wide angle scenes.
maybe you can try to do something like that as a function in mlvapp. it's worth checking out!