I used the model of a demon I'm doing for a contest to test some of the new features of MM. You did an awesome job as usual, RMS.
Now that I'm using the lazyNezumi for the lazy mouse I'm finally starting to get the right feeling from the sculpt brushes, the only thing missing is the possibility to have bigger values for strenght: when I use the surface brush with a small size I have to pass on the same spot countless times just to start seeing a faint line. Or maybe an airbrush function in the brushes could do the trick (not to mention it would be quite useful anyway)...
One thing I just noticed is that when I double-click on the sliders, a window to insert numeric values pops up; I don't remember if you added this feature in the previous versions, anyway it's quite cool.
Is there a way to select more than one manipulator at once for the warp?
I also noticed that if I try to do a mirror of an object, the transformations manipulator shows up at the center of the mirror plane. Is it possible to have a relative position for the mirror plane so that if I'm mirroring smaller objects I don't have to zoom the camera back and forth to use the manipulator?
There are just two issues that I found, one is with the drag 'n drop, the other is with the plane cut. I'm attaching images of both.
For the first I didn't used it extensively, but I noticed that sometimes the mixed objects disappear, or rather I should say that they are moved on the inside of the model, creating a hole on the mesh.
For the second, I don't recall if anyone already pointed that out, but some of the object's faces are reconstructed in a weird way.
Anyway the build is quite stable, it crashed just one time when I did a transformation and the mixed mesh rotated inside of the model, so I think I could call that just bad luck.