I’m not sure if this has been added. but a way to have a smooth EQ or effect change in a way similar to Flash Tween frames or VEGAS Frame Tweening would be a great addition
for instance, 25% speed at 1:00 smoothly gradienting to 75% at 1:30, or pitch at the same intervals, smooth
Effect > Sliding Stretch gives you sliding tempo and sliding pitch, which by extension gives you sliding speed. For EQ, or similar, you could duplicate the track, apply the full change to the duplicate, then cross-fade the tracks.