Eight looks great! (And a followup question.)

I think option 8 looks very nice!

Now that the numbers are visible, and accessible via tapping, I have a question about the placement of the numbers. Since key-placement in Fitaly is optimized to reduce hand movement, would it be more optimal to have all the numbers together on the same column, rather than having them spread across two columns?

Just asking the optimization experts what they think. If they think the keyboard would be more optimized with the numbers as they are now, that's fine with me. :)