I agree. The problem with that mindset is a sequel is suppose to be inherently the same as the predecessor, but new. This is why many Smash fans talk about characters and stages because that is what people want in a sequel. Now mind you, it's not just Sakurai but Nintendo in general. Mario Kart 7 and 8 defiantly follow this. Did we need hang gliders and anti gravity in Mario Kart? What people wanted was more tracks and items. I think the reason Brawl worked so well despite some of it's pratfalls was it tries to be a better game than Melee. Sakurai said they made it like the last Smash Brothers game, and it does feel that way. Smash 4 feels like "another Smash," which may not be all that bad if these games didn't come out every 6 to 7 years. I think Retro would have the passion to make the best Smash Brothers game. And again, some of these things would be cool if they gave us them and the other stuff as well (IC, Adventure, a real Classic Mode). Also, a friend of mine made a great point that what they should have done is made the 3DS game and spread out the Wii U release for about a year to give them time to polish it. It would also be good as the team can add DLC characters (which would already be in the Wii U version) and balance patches.It's a Sakurai philosophy to not make a sequel unless he can invent "a different direction" to take the series. Which is well-intentioned on paper, but at this point in the series' lifespan, it's doing more harm than good. Babies (Adventure Mode, classic mini-games, Ice Climbers) are being thrown out with the bathwater in favor of shallow replacements (Smash Run, collectible power-ups). The existence of the 3DS version absolutely reeks of "wanting to do something different" in particular, since there was no reason to develop both at once, other than to promote that as a flashy new gimmick.
Retro would not only have a fresh, original Western approach to the series, but has a well-developed track record of actually caring what makes the series they work on great to begin with. I'd trust Smash in their hands entirely. David Wise would become a composer for sure, for an added bonus.
Re: all the Kid Icarus talk going on, no one should be too hard on the series itself; it's Sakurai himself that's the problem, not the series. Uprising was this close to being a Star Fox game, in which case we would have been stuck here complaining about Star Fox having more enemies than Mario, multiple new ATs, items, characters, etc.