No, but it’d be nice to get in touch with friends from other states and a mile away and all play the same game and have some fun with it.
As Justin Bailey alluded to, yes. Virtually every game should come with a multiplayer component, and if the game can take a multiplayer component, it should (Bioshock being an example of a game that wouldn’t have a good online translation).
I’m fine with it being an “old school Mario”, but technology has, in fact, progressed substantially since 1990, and it should reflect that.
I appreciate the enthusiasm for those games (especially Metroid), but I actually was quite disappointed in the lack of anything really firm regarding a new Zelda title. Their vitality sensor really needed an application to go with it to make it into something special. Personally I like to see innovation announcements, hardware or application, at E3, not just title announcements, which are nice and all. There is nothing wrong with it, it just doesn’t add up to an exciting E3 for Nintendo in my book.
Miyamoto explained that one. The Zelda team didn’t want to spend a ton of time developing an E3 demo when the game is still a year and a half (at least) away.
Basically, it’s too early to show anything beyond saying it exists.