I made they very same stowage argument against the hump when the OM-D EM-5 was announced. It’s one of a number of design issues with the EM-5, at the very least the hot-shoe should have been recessed into the hump, not plonked on top. But after a year of use I can’t say the hump has ever caused me any real issues.
But I find the current aesthetics of the XEs to be quite dull, specifically the top half. It looks a bit empty due to the absence of an OVF window for a rangefinder style camera.
I think a small well implement hump for central finder would also improve the looks, while allowing the hot-shoe to be central, and the built-in flash to be offset to the side.
Done well, it would add a bit of character.
I know I’m in a small minority, I check out the Fuji forum and know strong the support is for the rangefinder style and shorter FLs. But you guys already have the X-Pro, XE and X100s, while for those with a preference for central, we have, er, nothing. At least nothing Fuji-X.

Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.