Anonymous how? It'd have to be built on top of a network that worked like the Onion network. At which point there'd be absolutely massive overhead, and you can already today just use the Onion network to torrent (though it's a pretty dick move to do so).
Anonymous means your ISP knows that you connected to this network, and neither they nor anybody else knows anything else.
Tor has a lot of weaknesses, but yes I'm just talking about a better Tor.
What I want is a network designed so that it's mathematically impossible for person, government, or LEO to regulate the transmission of any given bit from one place to another. The whole point would be to eliminate all the pontificating, moralizing, and witch-hunting currently still associated with transmitting bits.
I'm not sure 100% fool proof anonymous digital communication can exist. You can always trace the source of a digital signal. Bitmessage is a pretty cool solution that is "close enough" in my opinion. You should check that out.