It's going to take me a while to get used to a new camera, but so far the X-Pro2 is everything I was hoping for and I'm sure I'll like it. Since I've let a couple of generations go by before I added a body, some things I notice may already have been addressed in earlier models.
The write speed is about a light year ahead of the X-E1 as is the AF. The new sensor seems great with good dynamic range and crisp images. Color is great, but I'm not sure who to give credit: processor or sensor. I've been shooting a bunch of images around the house in available light at ISO 12,800 with pleasing results. 12,800, good grief.
The Electronic Shutter will be an interesting feature. I can see this as a godsend for candid shots, street, and quiet places. It makes me feel like a spy. Ha. The shutter sound (no doubt fabricated by human factors engineers) is pleasing.
The camera has a very solid feel, though it seems a bit blocky. The right hand grip is just enough to give confidence to my fingers. They seem to have found a balance between light weight and a totally solid product. It gives a sense of confidence that this is a serious tool.
I think a lot of people are going to be very happy with this camera. Maybe not everyone that tries it, but many will.
These are just my impressions, no pragmatic technical examinations, from a very short time of use and I haven't been able to get out much since the weather has been crappy and my wife is recovering from surgery. This camera may end up being the one I use most of the time.