3DS Revision with dual analog
PS4/XBox720 tech demos
Vita games, new and exciting ones
Ratchet&Clank HD Collection to come with Deadlocked HD either on-disc or on a bonus pre-order disc (vouchers can gtfo).
Final Fantasy X HD preview of some sort.
Some more HD Collections (Kingdom Hearts, .Hack, Wild Arms, etc.)
Give me all those things and I'll come away very happy with E3. But I don't actually thing that stuff with the HD collections will happen (just wishful thinking).