I hope for balancing and updates without DLC. I'd be much happier that way.
'Less deadlines eschew somethin' originally planned in the game. Y'know, like most quality games.
If DLC comes t' be, I'd assume patching will as well. I don't think we'll have t' worry 'bout the next Meta or nothin' in SSB4 if DLC does become a thing for Smash Bros... 'Least, I'd hope Ninty would have plans to do balancing checks 'n updates if they've the tools for DLC and such.