The Canon F1.8/200mm is a great lens with plenty of potential for X-Mount users. But you'd have to find the FD version, which is difficult, because they were rare in the first place (they were built to appease angry FD system pros shooting the Olympics back in the day) and because most were converted to EF later. However, I recently found the type on eBay Germany, and I almost spent the little fortune to get it. In the 90s, the 1.8/200mm, 2.8/300mm and 2.8/400mm were my Canon EF workhorses, so I'm well aware of the good handling and the optical quality.
As for XF zooms: Since Fuji (and the vast majority of their customers) consider the X-Mount system a compact system, I doubt that there will be any effort to develop, market and sell large and heavy XF lenses, especially zoom lenses. Zooms are targeted to the amateurs who want affordable, lightweight lenses. So I expect more zooms that are actually slower (but also smaller and cheaper) than the current 18-55mm lens most of us love. After all, Fuji has to compete with Sony here. So if your ideal zoom lens is the fast, large & heavy kind, you'll probably only find it elsewhere, and you'd have to use an adapter. Everything will be MF, of course, but I don't consider this a problem for me personally, as I was trained to shoot sports and action with huge, large, long superprimes in MF mode. Back then, I used to put the EOS 1n and the lenses in MF mode, even though Canon's AF was considered the best during the 90s (plenty of professional Nikon F4 sports shooters changed to Canon because of that).
I also think and hope that Fuji will continue to develop fast high-quality prime lenses like the 35mm and the upcoming 23mm and 56mm primes. I'd definitely like to see tele primes, like a 1.8/85mm or 2/135mm. Reasonably fast, high IQ, but still small and easy to carry.