I do wonder why IA does not maintain a IPFS instance, or if they do, why they're not more popular? There's tons of IPFS mirror services out there that operate at reasonable speeds. One issue I've run into with IA is old enough websites that there's JS or CSS that just wont render, what I'm not sure about is, can we retroactively fix such things? Would be nice to be able to un-ruin the code somehow if they exported everything possible at the time.
Edit:
Would be really neat if you could click on a domain while on IA, and a desktop client downloads as many WAR files in a slower priority download queue, as many as you're interested in, with higher priority pages first, and then you can view it fully offline.