Thanks for the encouragement and wisdom. I hope your additions, and mine, work out in the end. A real hurdle with tasking everyone with patching for their devices, aside from having probably long since given up hope for use of the device on GNU/Linux, is the amount of disparate forums they voiced their issues on. There's also the daunting likelihood that select few music creators actually would decide to compile their own kernels to see if a problem is fixed, let alone feel comfortable enough applying a patch.
I hadn't realized this was a list to drum up testers, or that every change needs to be tested fully. I thought it was a direct path to possible acceptance for inclusion in the kernel, if reasonable doubts are considered.
I hope they'll let me sidestep that huge, unreasonable, undertaking, as my test implicit feedback "fix" for the UA-4FX (which doesn't need it) proved it still functions as perfectly as without it. That should mean that for the devices that don't require this patch, but which had been accidentally added, no harm is done. I can't really see myself as owner of all these devices someday... ;)
Thanks again, Geraldo!,
Lucas Endres