Works pretty well so far.  I turned down the undo cache to speed up the deletes.  Noticed that the library thumbnail is black if I save my figure while the morph tool is open...

But the improvements make it so much better.  The movie settings window still forgets when I check framerate (but it does recall the new frame rate number, just not that it is selected) but so many things work better now.   I've had a few random closes and a couple of hangs.  The hangs may have went away had I waited long enough (I found this out by accident) and the random closes were at times when I wouldn't lose anything.  So far I haven't lost anything but time, and less than I would have with version 6.  Morph tool is worth the price alone.