Had to come back to this thread again - truly a great resource.

I gave up dealing with the ShuOne KM sync and my non-hardware-programable keypad. There's just many things that you cannot do with the ShuOne, even if you do a lot of remapping of keys at the OS level.

Ordered a Aimos KM sync and hardware programable keyboard last night (was debating between Redragon K586-PRO vs Corsair K95, went with K586 at 1/2 the price). I think that's the best way anyone has found to get 1 button macro keys for all the functionality you want (switch broadcasting on/off, switch to only single PC, switch mouse input to relative vs absolute).