Valid point up until Wii Fit Trainer. I still don't understand the thought process behind that and never will.
Then, you're clearly not trying. Wii Fit Trainer is one of Nintendo's most recognizable characters from one of their most popular IPs. Her inclusion is exactly the kind of outside-the-box thinking that's so integral to Super Smash Bros., a fighting game that subverted the entire genre. The series is a celebration of Nintendo's entire history; Wii Fit Trainer, like her or not, is part of that history and a pretty important part at that.
And yet somehow the RPGs of the SNES era, which are tremendously popular and influential on the entire gaming industry, have no representation aside from Fire Emblem and Earthbound. You want to try prove to me that is a celebration of Nintendo's success, then get any character from one of those RPGs that Nintendo owes a lot to. Even as an assist trophy would be fine.
There are a lot better choices of influential characters to choose from. I still think it is a poor choice.
RPG's from Nintendo or 3rd party? Aside from Snake, Sonic, Mega and Pac Man were pretty heavily requested characters. There are people who want Chrono and god knows what else Square and/or Enix made in the day but like Sakurai said, he won't just ad any company's character into Smash Bros. And if anyone got in from them the big RPG makers it would be something like Slime/Chocobo/Dark Mage and those guys are now from the same company. While
Nintendo owes a lot of it's past success to games like that, though what characters among them is an icon? Granted not every Nintendo character is an honest to goodness gaming icon but it's pretty obvious if it's 3rd party they darn well better be.
@Bman. Prepare for Chrom. I don't care about him too much but chances are he is making it in. I mean his Fire Emblem game really hit home with critics and fans, he is joining up. Ike had a completely unique play style with plenty of assets to use in this game. There was no way Ike wasn't returning.
My brother who is normally completely rational would often tell me "Chrom will not be playable because everyone knows a Smash Bros game has only 2 Fire Emblem reps, Marth and the new guy. That's the pattern and since Ike is in it's settled. Not to mention he isn't relevant anymore." At that point I proceeded to tell him how stupid he was. There are no patterns, especially with only 2 entries.
Relevance is another somewhat silly issue honestly. Jigglypuff, G&W, ROB, and Pit all say hi. If they were important enough at some point in time chances are they will be added into Smash and for guys like Jiggly it seems like they will keep being added.