Never heard an FJR described as a "sportcruiser".... Been there, done that- just too unwieldy for 90% of the riding I want to do.
Fz1. I have first gen. Ride it around town like a supermoto, heavy enough for long distance and I can still kick most people's asses in the twistys. Can even do a Trackday no problem.
Multistrada? It blends most segments together. It's comfortable, turns well, and has enough power to keep you smiling.
something without a chain drive? FJR was cool... I enjoyed the Kawi Concourse slightly more. Fz9 would be a cool bike to hustle up some back roads with a tank & tail bag.
1 bike that does it all? As long as your criteria does not include long distance comfort for a pillion... 2018+ Street Triple 765 RS <--my future bike 2017 Aprilia Tuono 2013-2017 Street Triple R 675 ABS <--budget friendly Gen 4 ZX-10R ABS with comfort mods. <--my current bike, budget friendly liter bike I've tried all the Sport Touring bikes and owned a couple of them. Great on the open highway but too many sacrifices in other places. YMMV.
I'd have to go Kawasaki C14 hands down even though the FJR is a little more refind but just not the rocket ship the C14 is down the superslab.
I'm thinking more along the lines of doing consecutive 300 mile days. HAVE to have a decent fairing. -jim