Yeah, it's really a shame how Ivan's GMK GBs get dragged on and on with tons of changes to make eveybody happy.
Ivan has by far the best prices! Nevertheless people don't join his GBs, but buy 150$ sets from the Originative with less keys or simple RGB Mod sets for 50$...
It must be really frustrating for you and I admire your endurance to make it work. In my opinion it would be best to close this thread and open a new one when the final mockups are finished. I believe many people ordered this set long ago when it was still about language packs and everything and didn't follow the thread anymore, so you'd have to cope with tons of cancelations and questions.
Just make a new thread with fresh orders, make a hard deadline of ~6 weeks or something and put the words "NO MORE CHANGES!" in big ass letters in the OP. Everybody who then proposes little changes should get banned from the thread
Maybe it works - maybe not. Just my 2 cents on this...
But no matter how this GB ends, I still wanna say
"Thank you!" for the work you already put into this!