zErgo - the 75% board, with ergo layout, but cyrillic and separate F-row.

Hi all.

Project zErgo is far away from realization, however it has a questions which I hope to get feedback from you.

First of all, I've started from the making the ergonomic symmetrical layout (inspired by semi-ergo and katana), but with a cyrillic letters as well.
Second point was separate F-row cause I use it in my job.
Third and last - from practice - it's convenient to have some USB-A at the back of the board, for mouse or something else.

On this ground I made this layout



and the project of PCB with the following specs:

• USB type C in on board (USB 2.0 support)
• 3 USB type A out on board
• FE1.1 usb 2.0 hub
• Atmega 32u4

however I was stuck with a case choosing. Cause standard 75% ones have no gap below F-row.

Which interests I need to check:

• Does this layout actual for someone except of me? Have you any suggestions?
• What type of case would be more suitable for the product - aluminum or plastic/acrylic?
• Does the plate actually must? On my prototype I use 5pin switches at PCB and quite happy with it. What is real plate benefits? Are you need it?
• Does this USB hub on board make sense?