Looking for a perfect frame... please help!

#1
Hi guys!
I've been riding a Bafang BBsHD motor fixed to a Trek Merlin - entry level MTB frame for over a year. Now, as I realized that this bike is mostly used on pavement within city and there's a little bit of flex in the frame when riding fast/putting a lot of power, on top of that the frame is too big for me (not to mention my wife) - all things considered I've decided to sell the Trek and get myself different frame for my build.
So what I'm looking for is:
- hard tail, alloy MTB/hybrid frame for people of around 170-180cm of height
- ability to run on 650b/27,5'' wheels (accommodating at least 2.2'' tires)
- Thru axles: front - 12x100mm, rear - 12x142mm (ideally X12 standard) - for stiffness and wheel-swap compatibility between bikes
- Threaded bottom bracket
- fender mounts as a cherry on top

Anyone heard of such an unicorn?
 
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