Talking isn't really that big of a deal. When I'm playing with others in Melee I usually talk, but that's because there always seems to be a dead silence when everyone else is flying off the stage and I'm waiting for them to respawn. 
Overall, the real draw is having some better opponents. Having opponents who don't whine when they lose is definitely a plus in my book. Having voice chat would be nice from a feature standpoint but it isn't something I'd probably want to take advantage of unless it was via friend codes... and there are other ways to talk to friends as Naznatips mentioned.







