This is actually what I like about Ken Rockwell - I know it's crazy, but I really like that he has very high expectations for manufacturers in future iterations of their cameras - to keep pace. This is why, a great deal, he says to stick with what you have, unless certain things really attract you.
That said, I love my XPro2, together with both Leica and Fuji glass. I just simply find Leica cameras simpler, but not necessarily more capable.
M9, M8, MM, 50 Lux 1.4, 35 Lux 1.4, 16-18-21 Tri Elmar