I'm really trying to wrap my head around all of this "needing more than 512 patches" thing.
First off, why would you do that to your self? Don't you like yourself?
Second, I can understand one song per patch. That's what I do, (but since I like me,) I only have my current live set, our current recording set, all with backups in secondary slots, just in case, and a few songs I'm currently working on. They are all spaced out over bank A, and B, but if I pushed them all together it would easily fit in Bank A. I keep everything else saved on my laptop.
Honestly, the only thing I can even KIND OF understand would be a "by request" cover band, but even then, with "one song per patch," it seems like it would be a lot more trouble than it's worth. In fact, it seems like it would be a show killer having to surf through hundreds of patches between songs to find the right song. But, like I said, I like me.