I personally am loving the Petites. Mrs. Raynier is playing on one at a Medievel sim for roleplay and she is adorable! They are supposed to release the male version soon which I intend to snatch up immediately.
As for human mesh avatars, I do not think so yet, for they would still need for me to have some ability to change lips, eyes, nose, structure of face is really important to me to bring out my features that I like in an avatar. The fluidity of mesh is amazing and I hope that the advancement continues!