Part of the issue is that if you allow the pack in both detachments, you essentially get the same costume covered in both detachments. Which I don't think we do. I believe it has to go to one or the other, aka the Shoretrooper debate a few years ago.
Also, the TK thing doesn't super bother me. I mean, we had a big debate over "FN" from The Force Awakens and people wanting to make FO TKs with a new designation. To me, I think we have enough as is and we just need to decide what detachment this costume can be fully supported and loved