Hi,
I just returned from a great 3 week vacation in the South West of the USA. I shot with 3 cameras. Here are my thoughts:
http://www.littlebigtravelingcamera.com/?p=7320
Joachim
http://www.littlebigtravelingcamera.com
Joachim, as always beautiful picture, and interesting to read.
I've been Fuji X owner since the X-pro1. I sold it, and got the X-T1 when that came out. I have the following lenses: Samyang 12mm f2, XF 14mm f/2.8, XF 18mm f/2, XF 23mm f/1.4, XF 35mm f/1.4 and XF 56mm f/1.2. So you can see I'm heavily invested into Fujinon lenses. I love them all - in their own way.
Now, I've been wishing for four things the last year: 1. more resolution. 2. full frame sensor. 3. better video (now that I have become a father!) and... 4. better lightroom support for my landscape shots (with green foilage). I shoot raw.
Why? Because I'm 100% convinced that more expensive equipment will make me a better photographer!!

Just kidding. Nah, this is my hobby. These is where I spend my money I have to spare. So. It won't make me better. But it will be nice to have. And the 4K video will be nice since we have a big 65" 4K TV already.
I bought a Sony a6000 for my wife. The kit lens wasn't all that good. But then I invested in the Sony FE 16-35mm f/4 lens - oh my oh my... that's a good lens.
When I saw what the a6000 could do with that lens I decided to get the Sony A7r MkII when it comes out. The A7r Mk II will be my "heavy" system for landscapes, with tripods and all - and video too.
The ergonomics and the menu system of the a6000... Oh dear. I really don't like it. So, how do you think I will enjoy (or not) the Sony A7r Mk2? I guess it's quite similar to your A7r? How do you handle going from Fuji X to Sony A7r? Is it even possible. The Fuji X system is so fun to shoot.