1) 2) 3), yes, it is still possible to directly connect to specific peers through IPFS, see http://gateway.ipfs.io/ipfs/QmTkzDwWqPbnAh5YiV5VwcTLnGdwSNsNTn2aDxdX

1) 2) 3), yes, it is still possible to directly connect to specific peers through IPFS, see http://gateway.ipfs.io/ipfs/QmTkzDwWqPbnAh5YiV5VwcTLnGdwSNsNTn2aDxdXBFca7D/example#/ipfs/QmThrNbvLj7afQZhxH72m5Nn1qiVn3eMKWFYV49Zp2mv9B/api/service/readme.md http://gateway.ipfs.io/ipfs/QmTkzDwWqPbnAh5YiV5VwcTLnGdwSNsN... I think that it should be possible to build hybrid centralized/decentralized sites with IPFS, with static public content being fully decentralized and sensitive information going through direct tunnels. Of course, the more decentralized your system the better. As far as the IP system, yes we are unfortunately still reliant on ICANN being sensible about IP allocations, but the DNS system can be fully deprecated. I do know that there is a project out there to redo the IP system in a decentralized fashion but I can't recall its name right now.