1. It's a funny thing about most RPG games. They really have no actual "stars" since each character does their part. In Mario RPG however the story does revolve about one character, which is Geno. Not to say Mario's part isn't important, is just that Geno's role could be argued to be bigger and important than Mario's.
2. My argument here is that a character's role in a game is more important than the number of appearance's he has made in a game. Waluigi was turned into an AT because his role in games have always been being a "filler" character in the Mario Party and Sports games. Geno on the other hand had a more important role in his game and would honestly make a better addition than Waluigi, imo of course.
3. How does that not make him popular? If he truly weren't popular at all then there'd be no mention of him at all around the boards, be it good or bad.
4. The fact that Geno made a Cameo in a game not long ago, shows that his creators have not forgotten about him and he is not exactly "dead". You keep talking as if a puppet being in smash isn't realistic, yet a Plumber, Hedgehog, electric mouse is? Sometimes popularity alone can get a character in smash as shown with Jigglypuff. And again, who you think is "deserving" is your opinion. I hope you're not one of those people who state it as fact, because I could go as far as to argue why a Goomba should be a PC in Brawl.
5. Ok then I understand that, but that was to prove my point.
6. Again this might be true, yet Geno was used in M&L Superstar Saga without even the consent of Square Enix. Geno's actual party status could be known as 2.5, since his real purpose was to appear in a Mario game. It really wouldn't cost a lot to use Geno.
7. That may be true, but if that were the case, Geno wouldn't have gotten a lot of votes (suggestions actually). I used to think about it that way, but I really have a hard time believing Geno was lucky enough to get 4 suggestions through while characters like Megaman and Sora got only 1 or 2. It is for this reason why I believe Geno's fanbase in Japan and here in the States is a big, if not, decent one.
That's all I'm going to say about that, any other discussions you have take it to the Geno thread. I'm done for now.