Anyone that has used the Mesh deformer for character work has probably run up against the limitations. 1. Cancelling out other deformers (FFDs and such). 2. Limitations with Pose Morph - Distorted Poses when the Cage mesh is deformed/rotated on an axis. Like a mouth shape that deforms in world space when the head is rotated.
I would LOVE for Maxon to make the Mesh Deformer Cage act more like an FFD. Or make FFDs able to be a mesh. Perhaps that’s impossible, but with most bendy/blobby characters, the behavior of a mesh-cage FFD would work much better than the Mesh deformer that needs to be initialized to the character.
The mesh deformer could definitely use a facelift. (Pun