Mirrorless Magic in a FF K-1

I have been shooting with Olympus Micro 4/3rds now for over 3 years.  I always had Nikons before that.  Since the film days.  I love the EM-1 and EM-5 II.  Not just for their easy portability.  But for their 5 axis IBIS, weatherproofing, focus stacking, Live Composite, etc.  And their outstanding image quality.

I do miss Full Frame though at times.  I purchased a Nikon D750 last year.  I did like the low noise of it.  Other than that.  It seemed kind of antiquated.  I was so use to my Oly's.   The live view was weak.  No GPS.   The "innards" we're nothing compared to the advanced Olympus cameras.  I ended up selling it with along with the rest of my Nikkor lenses.

Now take the Pentax K-1.  It has quite a few features that the Oly's have.  5 axis in-camera stabilization.  Weatherproof.  The built in GPS to me is a big plus.  The Oly's you have to use their Olympus share to synchronize the GPS.

I'm wondering if any other mirrorless shooters are taking keen interest in this very innovative FF DSLR as well.  Just my 2 cents.