I run out of CPU not because I try to use so many effects at once, but I want to have them in the same patch for changing scenes. I try to use a few carefully cultivated patches, and often play a show or rehearsal with a single patch. It's mainly an issue when using 2-amp 2-cab patches and one or two drives. Then I have to make bigger compromises like a very simple sound with reverb, or get the permutations of flanger/delay/termolo tones for variety but skip out on reverb altogether. So this discussion is more than just idle curiosity. I would be interested in a field-replaceable CPU upgrade of my unit, but not of buying a second unit. I'll just make it work with the awesome platform I have now until there is a way to make it awesomer. But I won't be one of those jumping on the bandwagon to buy a new unit just because it's available. I expect to use the AxeFX II XL for a long time.