Should be possible with the Power Curve. Set a dynamic for the shape and continue to keyframe from there. You don’t get a keyframe for each individual point, obviously, but you should be able to accomplish what you’re trying to do.
You could render out a flat pass of your conformed timeline (with some handles if you need them) to an intermediate codec like ProRes or DPX as a FCP roundtrip. Then import the resulting XML into a clean project with only that rendered media.
If you’re trying to spend as little as possible, you should be deciding between the MC Color and the Wave.. In my opinion it’s not really worth getting an incomplete set.