A lot of people are probably going to call me an old geezer but here's my two cents
I, along with others such as psychoincarnate and Mario_and_sonic guy have seen a lot since the Nsider days. If anyone has been here at all during the onslaught of "brawl prophets," you know exactly each and every one is a complete ruse cruise. Not because of the characters, far from that. It's because of how the roster was put together. Despite differing opinions, the reality stands each character has a chance. But with all those prophesied rosters we have had back then and now, you can all see they're all a bit too perfect or vague.
My honest opinion that people should have fun speculating. Who cares about the legitimacy of leakerbros and salromanos tipster? I mean really, when people do this kind of stuff before the inevitable reveal at E3 and the games launch; it is because people want to speculate and have fun with these ideas. No one should get ants in their pants over any leaks, it's not worth it. Especially over a video game
What hurts people through every "leaker, tipster, prophet, etc" is that they create a roster that's perfect for some and not others. Take the whole "this third party getting over that third party, this retro rep getting in over that retro rep, this fire emblem rep over that fire emblem rep, etc" situation; people that do this stuff cause a indirect impact by feeding the coal to a potential conflict. If you've been around the announcement of brawl; you'd know each and every one of those people who gave their vision of what the roster was going to be (as if they KNOW for a FACT by having inadequate sources) have caused numerous conflicts amongst fan bases. I'm already seeing people invade retro game communities as of right now and insulting them for liking stat tropics. It's really getting out of hand
TL;dr: It's ok to speculate and have fun with these rumors. It's ok to believe and hope your favorite character is getting in. But in no way you should be angry over them nor start a flame war. Let's be real here, no one is Sakurai; so there shouldn't be any concern here (pun via avatar unintended, I had this for a lot time
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Sorry if I said something that was obvious and full of common sense that anyone has but I'm seeing way too many people get uppity over this. For those who forget, let this be a refresher(?) for you