Ask HN: If we could redesign the Internet from scratch, what should it be?

I ask the question purely out of interest, not specifically about tweeking HTTP and TCP/IP but also about the underlying hardware, much of which is decades old. If we could completely divorce the Internet from history, what would be the best design. Would it take much more inspiration from OSI, or look radically different? Perhaps the question doesn't make sense: if we radically changed the Internet it would no longer be the Internet, much as the Internet is not simply an improved version of the phone network.