H+ intrigues me, mostly because physical limitations suck. We can only hold about 7 items in working memory at a time. Can't really multitask. Our productivity drops dramatically when we get tired, cold, or hungry. Good enough for hunter-gatherers, not good enough for me.
Essentially, I just want to be able to read every book in a library simultaneously, and remember as much as I want to - stuff that computers can already do.