I get what you're saying, but if they want to go about making Luigi unique or different in terms of smash. That would be a perfect way to do so.
Agreed on that much.
Frankly, I often wish that they would utilize material from each character's individual appearances. For example, back before Melee was released, I often hoped that Bowser would have the ability to throw out MechaKoopas (SMW), or fling around a Chain Chomp (SMRPG), among other things.
But again, Sakurai seems to be of the opinion that sticking as close to the original source material, and THEN making his own twists, is the way to go about things. And I suppose it's a valid choice, giving that it's his game, but I always had certain hopes for characters that, sadly, will just never be realized.
Of course, speaking of Sakurai doing his own "twists" on characters, what if the way that we DO get Ness back in this game...was if he was totally revamped from his original standing?
I mean, picture it...now that Lucas takes over the role of being the "lil psychic kid", maybe that opens up the possibility for Ness to be something different altogether. Perhaps as a teenage/20-something slugger with a more "mature" air about him, and even more bad-*** psychic abilities than before? Or maybe he joined a band, like the Runaway Five, in the time since he was able to "grow up", and just has a different style altogether?
I dunno, I would think the skies would be the limit, as long as Sakurai got Itoh's "OK!" about such a thing, just like he probably had to get the nod from Miyamoto to introduce such a thing like Giga Bowser.