Well, I think some people may still prefer MF lenses. The Zeiss Loxia for Sony FE mount is somewhat popular. That's pure MF lenses. Also I prefer small lenses, being MF means the lens can be quite smaller than the current Fuji auto focus lenses. Imagine you have native Fuji 23mm 1.4 lens and Fuji 35mm 1.4 mm, both manual focus, and the size of Leica 35 cron, wouldn't it be awesome?!
Also MF lenses that made for rangefinders, especially those that has the minimum focus distance 0.7m to infinity is quite fast to focus, especially for street photography. If you know what position of the focus tab correspond to what focus distance, at F8-F11, it'll be stunning fast to focus, or zone focus.
I don't know that much about other people, but if Fuji can make two MF lenses, 23mm 1.4 and 35mm 1.4, good IQ, as small as Leica 35 cron, having focus tab, 0.7m-infinity focus distance, around 800 USD, I WILL DEFINITELY BUY 'EM.