Just gonna touch on what Bill mentioned
I’ve had my XP-1 since its release, newer X models have been released since then (XE 1 & 2, XA, XM, XT) but I just kept on using my XP because it does what I require of it and then some. I’m also a big fan of the OVF (nothing wrong with the EVF, and I’ve seen the EVF on the XT and it is just amazing) just my personal preference. But I’m not going to say that the XP is the be all and end all, if I was going shoot tele, macro, or need something for really a rugged environment, then I’d probably pick up an XT. However, I don’t shoot macro, or tele and I’d probably run out of breath just thinking of hiking through rugged terrain, so WS isn’t really a deal breaker for me.
The same can be said with your lens choices. The 35mm 1.4 is permanently glued to my camera, I tried the 23 really nice lens, but I’m just really not used to the focal length. I agree that the 35mm and the XP-1 are made for each other.
As for the focusing speed, this is another kettle of fish entirely……
The XP-1 has had a bad rep regarding its focusing speed. When it was released a lot of people complained that it was sluggish ( I never really had a problem with it, then again I don’t shoot sports, and I tend to take my time when I shoot, so to each their own) and for many the slow focusing speed for the top of the range model is simply disappointing. However Fuji has released one firmware upgrade after another to address this issue. The amount of times Fuji releases firmware upgrades to further improve their product is probably the envy of every other photographer who doesn’t shoot with a Fuji.
The XP-1 is a totally different beast now with all the firmware upgrades, it’s almost a different camera from when it was released.
However, technology is getting better everyday, and that heralds in new designs. The XP-1 was Fuji’s early X-trans sensor model, and newer models have been released since then, with the latest being the XT. I have no doubt that it will focus faster and will have more functions than the XP due to the limitations of the technology / design at the time the XP was released, however if you’re not gonna shoot macro, tele, or sports or if shooting with an OVF is a deal breaker for you (it is for me), then the XP still holds it’s own with the newer models.