I was considering posting a similar question just yesterday, because...
Due to some issues with my hands, I need to use small mice, and the best-sized/shaped genuine gaming mouse I could find is the CM Storm Spawn, which is on the "not working" list, alas.
I, too, would be happy to send this mouse to XIM HQ, paying for shipping both ways myself, if it might contribute to a (slightly) expanded "working" list. (Possibly including the nearly-identical CM Xornet.)
And yes, I also understand that it might not produce results, but I'm happy to gamble that it might.