These are my latest changes - mostly just getting rid of most function keys and putting those I do use in places where they work - though I still don't know why they don't work the other places or why only some seem to have that problem.
F11 - shows Mac desktop
F9 - shows all open windows
F10 - shows windows for the active app plus recent documents for it.
OFF turns off TB
Next two are for copying the screen to the clipboard or to select a portion of the screen to the clipboard.
The 4 and 3 are actually connected with CMD/Shift to copy the screen or a window to the desktop.
Then, down on the green layer Left blade I only have F5 because it seems to be the only other Function key that normally does something (on some apps, it brings up a list of auto-complete words). I probably won't keep it since I've never used it, but for now I will - but out of the way.
These are all in patterns, vertically, of mostly related items. The first column increases text size, decreases text size, and close the active tab.
The next three increase, decrease, or mute the volume.
The last three brighten the screen, dim the screen, and finally there is a play/pause key.
I set these up so I could fo them with just one hand, even though it takes three fingers for any of them. Not as nice as only needing one finger like on my Apple keyboard, but pretty good. And I think this is better for the text and tab options.