[suggestion] add to fade-in fade-out not linear steps.
Can be nice if the fade in and fade out (most used effects for fast fading) can have some presets (not just linear ramp up and linear ramp down) in this example there is first step of fade-out.. a small pause and the final fade-out (to a complete black).. but can also nice to ave something a little bit more "bouncing"
maybe a little bit strange... but surely something different from just a linear fade.