Actually, the coaster brake is the one part of the equation that I'm not thrilled about (my bike has one).
I hadn't used a coaster brake in about 25 years, since I was a child thrashing on a Huffy BMX bike, before I bought this bike. I had also never used an IGH except on a borrowed bike on an extremely short ride where everything was frozen in a single gear.
I'd prefer to be able to backpedal to find my starting foot-point, and I'd like to be able to use oil instead of high-temperature grease when rebuilding the hub. Besides, I don't have a problem with rim brakes in most situations. Having said this, for years I rode all of my miles on fixed gear bikes, and I like that, too. I think I want a disc-braked IGH, really! We'll see how the budget works out.