How can do a transition or mask with a gray mask like in old R2.41? With the old bmp mask i'd can slide in to out and the mask use the grayscale to disolve the layers but I can't reproduce same efect in R3... or something I missing to do?

Request:
Can back the RGB (and now Alpha) buton to select channel output of entire layers? In same way that clips do:

Can put the old "Max-min" loop for the all "timeline" playback options:

And the old "Random" playback?
