I don't understand the big deal about this - ISO can be assigned to the dpad - press up and ISO goes up - press down and ISO goes down - it shows in the EVF but it doesn't fill the EVF and disappears as soon as the change has been made.
I've been on the fence about the X-H2s primarily due to price. I preordered the 150-600 and cancelled the order because I wasn't seeing any wildlife (primarily birds) photos that I thought were any better than what my X-H1 and 70-300+1.4TC are producing. Perhaps my success rate of BIF and the ability to zoom in closer would have made photographing birds a little easier but shelling out $4,500 for the out fit is a little too much for a retired hobbyist on a fixed income. I've decided to see what the 40mp model will do with the sharp Fuji lenses I've acquired and specifically an X-T5 which should be a little less expensive.