MeshCore Heltec V4 Case

Needed a case for a HeltecV4 and have seen many designs floating around each with good and not so points in my mind. I designed the case originally to use nutserts but decided against it to reduce the size and printing in PETG which is not so brittle.
The Heltec slides into the case along with the factory GPS which is double sided taped next to the Heltec. The Heltec USB-C is accessable for powering/charging the battery (single 18650). I came across a 3400mAh which seems to last around 2.5 days on standby. An overnight charge every night and its good to go at least for a day.
I used a small rocker switch from ebay (model KCD11 -15mm x 8mm hole cutout) and a short uFL to SMA cable to get the antenna out the side case.
I created holes in the shoulders of the antenna end to allow attaching to a backpack using a small loop of paracord or similar.
You will need to print 2x buttons. These are protected by small shoulders on the case so pressing buttons is something very deliberate (esp desi