Gaming announcements have been so lame recently, even the PS4's felt a little bit anti-climactic. I want a game reveal that is shocking and unexpected, maybe add a bit of drama by turning the entire stage black or something. Portal 2's announcement at SONY's conference was a great example.
An ideal one now would be Tetsuya Nomura coming out on stage to show a lengthy Versus XIII trailer / demo and give a release date, or someone else from Square Enix announcing the new FF game for PS4 with a flashy CGI trailer.