If it wouldn't be too hard, I would like to be able to have an object fade only from a specific frame forwards. Right now, any increasing of the custom fading options happens bi-directionally.

So imagine an object appearing suddenly at the 100th frame, I should be able to start the fade settings from that moment onwards so it would only fade out. Or even better, allow the user to adjust the fading for each direction separately.

I'm trying to track a baseball as it enters the frame, moves to the bat, and then as it is redirected on contact and moves away from the bat. Only a fade-out is needed in this case.