I find it funny when people say some leaks are too "safe", when they basically list characters which people want the most. So it's impossible that Sakurai actually includes wanted characters? Or there always has to be a wild card? I'd say these "safe" leaks and rumours are the best ones because they have wanted characters. Of course it's good to be skeptical and none of these seem to be true anyway (bar the Palutena one maybe), I just find this approach funny. It's just overanalyzing: either the leaks are too safe or then they're not safe but then considered "definitely fake". But that's what keeps the speculation and discussion running I guess.