Hello Ashwin, welcome!
I have been fan of the feenix line of peripherals from some time. Glad you guys are back with new stuff!
Why would you change the case design from the fullsize version? That is the best part about the keyboard! Litterally to get one of the best tkls out these you just have to "crop" your existing design.
basically something like this: (credit goes to hineybush over at reddit)
Some other pointers, but this is more personal opinion:
-the case is too tall, i.e. It's height should match the bottom line of the keycaps, this is especially important for cherry or DSA profile keycaps.
-take the logo from the front of the case on the tkl version, put it on the back, you already have it showing on the keycaps. It just looks cheap. On the fullsize version it actually looks good, probably the best looking branded keyboard out there.
- please, please, please, consider a 1800 layout keyboard (leopold FC980m lookalike) a keyboard with that layout and a case matching the case design from the feenix autore keyboard would be just amazing!