I wound up with one of those newfangled playstation controllers, and I’m surprised at how good it is. It paired nicely on Endeavour KDE, and there’s a big touchpad in the center that works to control the mouse pointer out of the box. I’m quite happy with it!
Wait till you try a game with support for the adaptive triggers, like Rift Apart, where the trigger will only pull halfway for primary fire (and resist being pulled further), and putting in more force to pull it fully is secondary fire.
Most games don’t use it of course, but it IS supported and working.