Ryu in Smash was heavily based on Street Fighter 2 even having similar sound effects for attacks.
What, characters getting less special overtime. If only some genius was telling people that months ago.
To the second point, I disagree. One of the things I've seen more often is people saying how they want less guest characters (heck, thats the person above me). It was once completely uncommon (basically just me). Now I'm seeing it more and more to where its actively being discussed. It should be noted as well that Sakurai responded to complaints that there wasn't enough Nintendo characters. What I see is that there are folks who want Smash to be about Nintendo and some who want the games to be their personal MUGAN
When you step back and look at everything, there are a few problems with guest characters. First, who can you add? There is no Sonic, or Megaman or even Final Fantasy. If you look at opinion polls or discussion, you see a few characters, but no one that sticks out. No one has that broad appeals. This is probably why Inkling was the lead in character because they were the most popular. Next would probably be K Rool or Ridley. Next, would a new guest really be surprising? At this point, people are expecting those characters, so how can you really surprise anyone. It would be more surprising to add Ridley as people are doubting he'd be in.
I think a lot of people want to look at now as if it was the Sonic and Megaman days. Those big name characters are kind of gone. I mean, heck, you all are looking at B tier characters like Rayman and Crash. This is, in part, why I say there will be a scaling back.