Re: Highest action ever!!
I used to put one (extension nut) on an old Eko acoustic i had many years ago, and lay the guitar on my lap and play in open tunings with a lap steel player's bar. Mine are made from thin folded steel, and tend to leave marks on the wood, yours looks like that issue has been addressed to some degree by using thicker material.
You'll love experimenting with the bar angles you can get when you play it on your lap, lots of interesting chord fragments and inversions become possible. Have fun with it !