dlabrosse

This one was shot raw with my X100S and processed in CaptureOne 10.0.2.
 

 
Snow_Dec2016-8169-1 by Dominique Labrosse, on Flickr

This is the X100s with the TCL attached and the ND filter engaged. Lit with a hotshoe flash in a silver umbrella.
 

 
LucMarch2015-5826 by Dominique Labrosse, on Flickr

This one was shot raw with my X100S and processed in CaptureOne 10.0.2.
 

 
Snow_Dec2016-8169-1 by Dominique Labrosse, on Flickr

The Eastern Edge of Vancouver Island, Victoria BC by Isaac Hilman, on Flickr
 
Fuji XT-1, Rokinon 12mm, 10 Stop ND + Graduated ND Filters, 45 second Exposure.

Snowdonia ,North Wales 2014, X100s this is one of magical moments i went true last visit , small but very powerful mountains in North Wales, i went for black and white grainy look .
 
x100s c1  

Here's a portrait of my son. I was experimenting with the X100s trying to overpower the sun with a hot shoe flash. This was shot using a Nikon SB-28 in a silver Westcott double fold umbrella directly above my X100s with TCL attached and the built-in ND filter activated. The camera was set to manual, exposure was 1/500 of a second at f/2. My son was standing in open shade.
 
EXIF does not show the TCL because I forgot to tell the camera it was mounted.
 

LucMarch2015-5826 by Dominique Labrosse, on Flickr

If you want a small and portable form factor (in your original post you mentioned that one of the reasons you ditched a dSLR was it's size) I would rule out the X-Pro series over the X-T1/X-T10/X-E2.
 
From reading your responses it seems to me that an X-T10 or X-T1 and a couple of primes would be a good fit for you. This is only my opinion so please take it with a grain of salt. If you have no opportunity to go into a shop and touch these cameras before buying then build some mock ups out of cardboard so you get a sense of their size.
 
To answer your specific questions above...
 
1. (one lens on X100T) I own the X100S and this was an issue that kept me from buying one for over a year. I overcame my fear and finally bought the X100S and I love it! It goes with me everywhere and I eventually bought the screw on teleconverter that gives me a 33mm lens. This comes in handy when doing portrait work with it. If you're a pixel peeper then image quality with the small built-in lens and the teleconverter will not be as technically perfect as the interchangeable X series primes but it in real world use the differences are negligible. I love my X100S. That said I still own a dSLR that I use on particular projects. If this is to be your only camera then an interchangeable option will be more flexible but will be a little larger.
 
2. (X-T10 or X-T1 and a couple of primes) This to me sounds like the best option for you if you are really worried about flexibility. If you are really after a small portable, pocketable and unobtrusive camera to have with you at all times then the X-T10 and the 27mm pancake lens will offer a package that is very similar in size, features and focal length to the X100T... and still give you the option of adding lenses in the future. Personally I've been considering an X-T10 with a three prime kit to replace my dSLR but don't quite have the courage or the pocket book to make the change. I have however spent a good deal of time in shops handling the different Fuji bodies and have had a chance to walk around and shoot with an X-T1.
 
3. Yes it looks to me like the XPro-2 will be over your budget. Honestly I think you'll find the form factor too large anyways. Reading your posts it seems to me that portability and size are important to you.
 
Good luck!

This is the X100s with the TCL attached and the ND filter engaged. Lit with a hotshoe flash in a silver umbrella.
 

 
LucMarch2015-5826 by Dominique Labrosse, on Flickr

This is the X100s with the TCL attached and the ND filter engaged. Lit with a hotshoe flash in a silver umbrella.
 

 
LucMarch2015-5826 by Dominique Labrosse, on Flickr

This is the X100s with the TCL attached and the ND filter engaged. Lit with a hotshoe flash in a silver umbrella.
 

 
LucMarch2015-5826 by Dominique Labrosse, on Flickr