I'm sure this has been discussed over and over but I can not stress how important it is for adjusting IPO curves to have Euler rotations and not Quaternion. I understand that this would be a very large project but it is worth the work. The current workflow of just setting more keys to adjust the ease ins and outs of motion is just too much of a mess. The 3d medium becomes inefficient that way. It should be used to the best of its abilities, and that would be the ability to use as few key frames as it takes to make it look good. This allows for quick revisions of timing without having to delete the extra keys. Is it possible to have the face value of the IPO editor to look like euler but under the hood working like quats?