It would be really cool to have the ability to add fades to the start and ends of loops.
When you're looping a beat-driven section of a track, it is usually fine to just hard loop on the down beat - the beat itself masks the cut between the end of the loop and the start of a new loop.
When you're looping more melodic or ambient, less beat driven sections of a track, it is sometimes usually quite difficult to find a suitable loop point. If there was a loop fade option, this would be much easier, as you could simply add a 4 or 8 bar loop, and then set the fade to 5-20%, and the end of the loop would fade out (playing the section of track AFTER the end loop marker) while the start of the loop would fade in, thus avoiding harsh jumps in the sound.
I'm not sure how useful this would be in practice - there are obviously cases where it would not work (e.g. two chords that clash), but there are many where it would work (e.g. looping a chord pad progression that has an evolving soundscape behind it). Just an idea :)
Great idea! I think it will take some experimentation to figure out exactly how this should work. Maybe a knob could be added to decks to control the fading amount.