Lets face it, we're all hoping for something beyond the 50-60 character roster. Any classic Nintendo character would be accepted with wide, loving open arms, and regardless of how long it'd take to develop said characters, we'd still cherish it. At this point, Super Smash Bros. has become something more in our eyes. It could reveal us to classic gems from the past, and most if not all have experienced those wonderful games. In the short term, we'd want more from each giving franchise. What's better than giving them a reason to rehash a higher standing of what we love? I'm not at all being sarcastic with this statement and question, because no matter how great you are at giving the content your fans desire, you can always be better. Even if it takes longer than what's to be desired, if you get a full quality deal, that is what matters for and from a growing company.
Edit: Their working around the clock, all day Sakurai says, and they have produced some amazing mechanics that stem beyond what once was. Regardless of the complete roster, regardless of the DLC including the ice-climbers, we should be grateful. Ice-climbers to me, is inevitable.. In fact, Ice-climbers from Melee is what drove me to buy the original game remastered for the GBA, that is a personal experience no one can take from me. If their not included, I'll still be accepting of it, I'd just play them on Brawl, or Ice-climbers for the NES. I still have beyond much more to say than just this, but I'll give it a rest.