Every camera and every lens is a compromise. If the Fuji x-t2 would have a touchscreen and IBIS, it would still not be a perfect camera, because everyone would laugh at the 2500 dollar/euro price it would likely be. And just because some people desire and can affort to buy such X-T2 doesn't mean it is a profitable proposition for Fuji to create such camera. Same with lenses, the Fuji 90mm F2 is an outdoor portrait lens for good light and with its quad linear motor great for moving subjects. Just because it is a prime or F2 doesn't imply that it is meant for lowlight photography. Other primes generally work fine for me in lowlight.
Maybe my experience with lowlight photography is limited, but I don't know what I would need IBIS for. Either I photograph still life and use a tripod if I really want to keep my ISO at 200. Or there are moving subjects in my frame, generally people, which require a 1/60 shot to freeze them. In the latter case, IBIS is not going to improve the 1/60 shot significantly. Photography is a creative proces and choosing the right camera/lens and knowing and compensating for the compromises which the manufacturer had to make is part of the job. I see Fuji photographers being profitable in nearly all areas of photography. So if my shots are bad, I blame my lack of creativity to get the shot right and do better next time.
If you demand perfection at any price, then maybe Fuji is not your system.
Velvia is too rich for me as well. For black and white, I often just use the JPEGs, since the X-Pro1 film simulations do a very good job. For colour, I generally use the RAWs, and either Provia or one of the standard Silkypix V7 film colours.
