Some people want the game to last longer, like some DLC can have more characters that would make the game last much longer, some DLC can have missing music for a game that needs to have more music in the game, some people want have more stages also another gameplay mode. Just about most of the games on 360 or PS3 have mostly DLC, and the Wii has less than five that has DLC. Like I said, if you want Smash to last longer, then you want DLC.
Good games last long enough.
One reason why I refuse to buy a PS3 or Xbox 360 is because of DLC. It makes incomplete games, kills the second hand market, makes retro gaming fade and all at the expense of "I'm bored and cannot make my own fun out of this game."
Some forms of DLC is valid. Patching bugs, fixing balancing issues and the occasional new content is fine. But what DLC is being used for now is just wrong and lazy.
Another thing is completion. IF a game comes out now, in 5 to 7 years, is that extra content still going to be available? I know of 20 wii games I want to buy. that number raises every 4 months. If all 20 games had DLC, I may get to some of them until the bargain bin holds them. Will the DLC still be available after that long time? Will I be able to acually play as Darth Vader on the Xbox when the next system is out and Namco is moving onto SC6?
DLC does not have to be new characters necessarily. DLC can be stuff such as alternate characters (think Tekken 4 with Eddie as Christie's alt), new music, alternate costumes, new modes, new stages, and patches to help balance the game.
At the very least, Nintendo could do a rerelease of the game like Tekken 5 and 6 got and include all the new stuff on it. Or they can have expansion discs for sale like the Halo 2 Map Pack.
The way I see it, all the extra alt costumes and stuff would have been in the game originally (Tekken like you said and DOA) if there is no DLC. now with DLC, companies can cut producing all the extra content, give a barebones product and force you to buy all the extras that should have been there to begin with.
I have no problems with DLC if a disc option or a method to get everything (IE physical copy). I dislike the idea of Download only games for the reason that companies can restrict the hell out of what you do. DLC works the same way.
I see it as a way to limit the gamers freedom. Yes we get more stuff, and more stuff is cool, but we are sacrificing gaming rights for another 10 minutes of extra content.
that is my opinion on it.
Back onto topic.
With the release of Captain Rainbow, I think almost all of the characters used lost their chance of being playable (except lil mac. The new punch out saved him.) Tha game just took the piss out of them and turned them into joke characters who are perfect for AT status.