1. SCTP instead of TCP (doesn't suffer from the maddening layering violation in TCP/IP w/ the host IP being part of the TCP tuple). This would solve mobile IP.

1. SCTP instead of TCP (doesn't suffer from the maddening layering violation in TCP/IP w/ the host IP being part of the TCP tuple). This would solve mobile IP. 2. SRV RR's instead of "well known ports". Solves load balancing and fault tolerance as well as allowing lots of like-protocol servers to coexist on the same IP address. 3. Pie-in-the-sky: IPv4 semantics w/ a 96-bit address space (maybe 64-bit).