Who had the opportunity to play MOTHER 3 besides the importers?
No one, that's the whole point. People would be rather pissed if we kept piling on all the JP only characters instead of characters everyone had access to.
Lucas is alright because he's part of a series that people were at least somewhat familiar with. Worse case scenario, they think he's just like Ness. Marth and Roy were okay only because NoA specifically greenlighted them (and that was still a gamble, albeit a really really good call).
Sakurai has decided not to include characters specifically for the JP version of Smash Bros. only, and that means he needs to take into consideration what the west thinks. He doesn't know whether certain characters will definitely catch on with us. Thus, "hesitant to add more JP characters."
You could also ask why all the R.O.B. love when you don't take into account his Trojan Horse origins.
What does R.O.B. have to do with JP only characters?
Funny you say that. The rules for inclusion are rather broad.
It's not as broad as you might think it is. People just have a tendency to believe and preach stuff that allows or denies certain characters. In order to justify some of the really wacky choices, they lower their standards... and that means justifying some even more wacky choices. Suddenly "the rules" become rather broad indeed.
I know I should say this....because this is only going to bring up a argument that's pretty dead right now...but really Toise? You were arguing for Jody Summer just a bit ago, despite her being 3rd (by your count) in line for a series that is half dead. Now granted you weren't up for her getting into SSB4, but rather some other Smash game along the line, but when we reach the level that we need Jody, we're at the level that we need Donbe & Hikari. =/
That assumes that F-Zero is somehow less worthy of having characters compared to other series because it's "half-dead." Funny how a series with more material than Star Fox is inferior because it hasn't had a game on the DS or Wii yet.
Anyway I'm not gonna argue with you because arguing with you over anything does nothing. You've already got an opinion for every possible subject and you don't change your mind. Not saying that that's a bad thing, but you gotta understand that I'm wasting my time anytime I rebut you. In fact if you've got a rebuttal to that above paragraph ready, you might as well just save time and scrap it. I'm pretty sure I know what you're gonna say though.
For the record, I'm not ignoring you, just skipping any arguments with you. It's just faster this way.
edit: clarification and whatnots