I would love to get a dedicated portrait lens for my Fujifilm XF cameras. I'm in more or less constant danger of winding up with their 56mm f/1.2 or 90mm f/2 if I find a deal on a used one.
The only thing that's saved me so far is that I got a smokin' deal at Roberts on a used XF 50mm f/2 R WR. While the 75mm equivalent focal length is a little shorter than I find ideal, it's compact, fast, and sharp as a tack. It sure spends a lot of time on my X-T2.