... with Leica badged lenses (unlike the Leica lenses designed for the current for Panasonic m4/3 cameras),
The current Panasonic-Leica Four Thirds lenses are not purely Leica designed; they are designed by a team lead by a Panasonic engineer, with some input from Leica. At least, this is what Panasonic has said on its web-site. Why do you think it will be different with Leica branded lenses for Micro Four Thirds?
Leica has an outstanding 20 million Euro loan from Panasonic, maybe to finance its ongoing participation in lens design for Panasonic cameras.
I agree in seeing no performance advantage to a Leica version of any Panasonic Micro Four Thirds camera, and hope Leica's stays to collaborating with Panasonic on lens design.