Suggestions are welcome
My suggestion would also be to include some blank (or maybe dots/fruits) R1/R2/R3/R4 1.5u keys, the vertical ones too.
I also think a vertical 2u DEL key would be nice. It is pretty common to have enter/space/delete/backspace on vertical 2u.
Maybe some ergo specific keys? For example ⟲ and ❐ for layer switching. Those are from ergodox-ez configurator.
From my personal setup (but I think these are also somewhat common, they try to mimic ansi keyboard) I would like to suggest:
* 1.5u R1 += and -_ keys
* 1.5u R2 [{ and }] keys
* 1.5u R3 '" key
I'll post more suggestions if anything comes to my mind.
Thanks for ergo btw!