Well that's different, and I don't agree with that. I don't actually disagree with fanbases going against each other, as long as they do it in a Constructive way and respect the people on the other side. Like as a Shadow fan, I feel threaten by the possibility of Arle, Tails, Kazuma Kiryu, Axel Stone, Sakura getting in, and I might be on the other side debating against those fanbases, but I can at least respect the people on the other side and give my reasoning and also look at the reasoning of other people.
So if Isaac fans and Waluigi fans go against each other, even if they don't agree on a conclusion, as long as they respect the decision of their fellow brothers on the other side it's not a problem. I mean, there are mods on this site right. If someone is roasting a fanbase pretty bad and telling them their character sucks, the Mods could come in, some of the Smashboard populace can come in, it's just like that.
And i agree, you got to at least have something to debate over. You can't just say Waluigi bad or anything and expect good stuff. If I say, "Waluigi has a chance, but if Geno is an option, than has me worried about his chances" then that's a good debate question. I think that could happen with Assist discussion. yes