Crop Improvement

I’ve been using the “Crop: Source” filter a lot recently, and I was thinking that it could use some changes. First of all, I think it would be far more intuitive if it was set up similar to the “Corner Pin” filter. Where you used different points (such as ones on the X and Y axis) to make cropping easier for the user. Also, some form of Keyframing for the crop filter would be nice to see in the future.