I'm coming in expecting only franchise games tomorrow so if there are any suprises, I'll hopefully be happy lol. The only casual game I wouldn't mind seeing tomorrow is Wii Sports HD with online play and a large assortment of holes for the golf portion. Even still, I don't want much time dedicated to it in the Direct. A simple trailer and bullet points would be fine.
Speaking for myself, I think I'll be satisfied with getting a look at Wind Waker HD, an in depth look at X, and Retro's game. Retro's game is the wildcard IMO though. There is so much drama that could arise online tomorrow solely on that one game. First of all, we don't even know if it'll be shown. Second, it could be anything from another Donkey Kong game to Star Tropics, to an original IP. Everyone is gunning for Retro to finally showcase what the WiiU can do graphically that if the game isn't seen as such, it'll cause hate by that opinion alone.
Its really crazy when you think about it, I think we know more about Nintendo's E3 showing tomorrow that we ever have for any of their previous showings yet there seem to be so many question marks. We have confirmations of which 1st party titles they will be showing but we have no idea if 3rd parties will be showing anything or if they've completely given up on Nintendo this year.
Now that I've stated what I would need to see to be happy, I think Nintendo needs to show more in order to get everyone else excited, especially those that haven't already taken the jump to WiiU waters. Of all the 3rd parties, I can only see UbiSoft showcasing something original for the WiiU. There is not a single other 3rd party that I can imagine that would dedicate an original release for the WiiU at the moment that isn't some family party game or licensed trash.
I'm hoping to see a ZombiU sequel or if we're extremely lucky, Beyond Good and Evil 2. I'd be completely floored if there was a Western styled rpg in development for the WiiU especially since I think the gamepad is perfect for it (and rpgs in general).
I'd kill for a Fallout game where your Pipboy is the gamepad. Or even a massive open world rpg similar to Elder's Scroll but mixed in with ZombiU's active inventory management. I can see it now, your roaming the country side, you stop to look at your map on the Gamepad and onscreen your character is seen unrolling a scroll sized map and looking it over. Or you want to set up camp so you dig out the proper inventory on your gamepad and combine the materials while onscreen your character can be seen setting up camp. All the while you can still be attacked or ambushed by roaming bandits at any moment. It needs to be done, it'll put a greater emphasis in role playing which I think rpgs have slowly turned away from. Dragon's Dogma brought some of that feeling back with the need to carry lanterns at night to see. Makes you feel more in game I think.