I think Mario is in great hands. For me Star Fox, F-Zero, and even Zelda could use a western approach.
Do they need a "Western" approach? What's wrong with letting Japanese developers do their own thing? What's next, you want Street Fighter, the Persona series, and Soul Calibur to be outsourced to Western developers?
If Japanese games keep getting outsourced to American studios, then there wouldn't be anything that makes them unique. They'd lose their distinct Japanese style.
What would you say if anime and manga were all outsourced to American cartoonists?
Man your touchy. But to answer your question, those fighting games are fine as far as I'm concerned.
As wonderful as SS is, it does lack in the epic scope of things, and to be honest, creativity as well. The world is always coming to an end, and it never seems like anyone notices outside of MM. I liked that TP had a "big" town with lots of NPC's everywhere, even if you couldn't talk to half of them. But there is always like one major town, and 5 people living in every other town. I would love if the environments got a little more whimsical and creative. They are cool, but a little too bland and realistic half the time. Even Mario's realistic landscapes in Galaxy look beyond epic. The Zelda guys make locations too realistic despite the art style.
When I play Metroid Prime 1 and 2 I feel like there other things going on in the back ground despite not seeing it. Samus's actions have weight and to me the space pirates are really reacting to that. In Metroid Prime 3 Samus is back at the federation and I think "yeah, everyone is aware of all the amazing things she did. There is a real world out there." With Zelda I havn't got that feeling since MM and WW.
Retro would do wonders for Zelda, considering how they did Metroid. They would make it feel like Zelda and then add new and amazing things that just don't happen often with the current developers.
I mean I love flying! But why can't I fly over landscape and use my bird to interact with the world more? Special clouds the birds won't fly through is just BS to keep the game from being more fun. Retro would have done it.