Perhaps pair it with a classic arcade joystick instead?
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(https://images-na.ssl-images-amazon.com/images/I/71dsQcRDIXL._SL300_.jpg)
Reason being.. ergonomically speaking, people will put this & their keyboard on the desk. And that small thumb joystick is something meant to be hand-held, not on desk.
It could work on the desk if you put it in a case shaped similarly to a rollerball mouse (which is what I wanted to do with the PCB :P) which positioned your thumb above it.
It might also need to be a bit bigger/heavier to work with an arcade style joystick w/o falling over :/