1. Sony
I only have a PS4 and a Vita, so this one seems a little obvious. I'm really excited to see UC4, Rime, Warner's exclusive (if it shows up), and some major exclusive announcements. Horizon especially sounds amazing if they can pull it off.
2. Ubisoft
I know it's blasphemy these days, but I like the majority of what Ubi puts out. Watch Dogs had problems, but I liked it enough to want to see the sequel; Syndicate looks good, but so did Unity, so I'm not sold yet; The Division looks amazing, but I want to hear some real hands-on impressions first; the Rayman games are amazing, and I would love to see another one; and I can't wait to see what their big announcement is, especially if it's this open world RPG. They seem like a big wild card.
3. EA
Visceral's game. EA Canada's game. Give it to me.
4. Bethesda
I only had a PS3 last gen, so while I've heard how great their games are, I've never played any (except for Dishonored, weirdly enough). I want remasters of Fallout and Skyrim so badly it's unbelievable.
5. Nintendo
It's freaking Nintendo. I grew up with these guys. I would love to see a Wii U price drop to get me on board, and to see if they have a Galaxy equivalent.
6. Microsoft
Just from an industry perspective, I want to see what they've got. This side of the business fascinates me, so I'll almost watch this one academically. Plus, a good third party announcement usually comes at this that I might enjoy.
7. Square
Deus Ex looks cool, but I never got around to playing the last one. Same with Just Cause. Not usually a huge fan of their Japanese output.