Here's my F122:
I'm sporting a very lightly modified layout:
- Left shift has been duplicated onto the button between it and 'Z'
- The numerical pad has been restored to near modern with borrowed keys from an early model M (blank keys are both '+'.)
- Ctrl + Alt keys are also restored and borrowed from the M.
- Aside from housing the Esc key and upper nav cluster keys, the left hand cluster has a few macros mapped into it. Setup is a modifier that accesses media keys in the Fn key cluster. Help is the Windows key, print/p,lay/erase are copy/paste/cut. The blank key brings up the calculator.
- F13-24 are mapped to Shift + F1-12. This was useful to me in my work as an iSeries developer, and emulated the original intention of those keys in green screen terminal emulators.
- The center button in the cross nav is another modifier. If held down, the left and right arrow keys become page up/down, the up and down keys become home/end, and the nav cluster above it is assigned to browsing key combos, such as positioning the cursor in the URL bar, opening and closing tabs, etc.
I wanted to leave the layout of the board as intact as possible, while also making it liveable. Some keys I left with the wrong legends, like the full stop and comma keys, the ISO enter (field exit), and the 1 and 6 keys. These do work as you'd expect on a modern board, but the M keys looked a bit out of place when swapped in (the numbers on the F122 are smaller than on the M, and the keys sit at an ever so slightly different height.) I could get away with the numpad because I swapped over the whole thing, and the Ctrl+alt keys because they're isolated. Esc and Scroll lock are the only ones that are mixed in with the original keys, but you have to look pretty hard to see the difference due to the placement.
I personally don't mind the ISO enter. I know it can be swapped, and I've had the opportunity to do it, but I think it's fine as-is.
The only thing I've thought about doing is swapping the tilde key to the second left shift, and the Esc key to the tilde position. This would be purely for the aesthetic of having all dark keys at the borders of the board. The tilde key in its current placement bothers my OCD a little bit.