Hey, so I have suggestion, if it's not possible - but I don't think it is yet?
Ability to quickly erase entire custom curve or even better - save/load curve shapes maybe? Sometimes I need to redo a curve from zero, and I need to hover over points and press del so many times. That would be helpful if you spend a lof of time on some really nice curve that you just wanna use later, or have saved curves for various types of animations etc. If curve could be scaled and repeated that would be even better. Let's say I make a curve for 10 seconds animation, and save it. Then I change animation to 20 seconds and hit bake with just maybe checkbox repeat [x] or something, and it would repeat the curve twice? Or if I make curve for 2 seconds and hit it with repeat, it would repeat 10 times to fill my animation? We have repeat only in clips I believe, right? Might be nice to have it in curves. And the other thing, scaling could be nice too. Maybe again, a checkbox scale to fit [x], so if I have my 10 second curve, but my animation (or rather.. baking time selection) is 5 seconds, if I hit bake with scale checkbox selected, it would apply that curve to fit into 5 seconds (so it would be 2x faster than original)? And without checkbox, it would just apply first 5 seconds of the curve.
I'm aware that I can just make a curve that fits the animation length, then use time scale baking to half, then use bulk changes, select keyframes, then navigate to the middle and paste those keyframes to make a single repeat..that's a chore. But if you could make more repeats and optionally scale curves to any length, it would make having saveable curve presets very powerful. If it's all too much, then I think at least ability to erase curve and load/save curves already would've been a great help.