Now that the option to use the controller as pointer and keyboard exists it wouldbe lovely if an option to trigger the recently added plasma-keyboard when clicking a text field with a controller.
I tested a similar setup with the “KWIN_IM_SHOW_ALWAYS=1” Environment flag, and it works mostly fine, but the controller doesn’t get focus on the on-screen keyboard so I’m limited to typing with just the pointer (unless i missed something).