Its good to hear that you like my ideas, I have ideas like this about alot of games but there isnt much I can do about them. Ill try getting into the biz but chances are it wont happen.
As for the hover skate things, I would like to see them. Skate physics are interesting and would be usefull if samus ever gets out into larger areas. Imagine skating around a giant boss on a wide open plain, dodging giant lofting explosives (larger than samus herself), then inbetween shots, skating backwards while zooming in to a small sweet spot with your sniper cannon. I have never seen that done before, and to be honest, that would ****ing rock. Plus you need to bring back something like the speed boots from the 2d games, but with first person mode just running would be kinda stupid. And if you had rocket hover skates the new physics would allow for much better new platform elements than just jumping further and higher. You would have to allow for stopping distance, and uh, stuff.
The vehicles, meh, I just would like to see a samus armor style hover bike, would look rather bitching. But I guess it wouldnt realy fit into her universe. The traveling at very high speeds across wide open planes, that I dont want to get rid of, so maybe add an upgrade for the rocket hover boots that let you go 80-120mph. That would make the shooting portion of things more plausable anyways.
Wall jumping? Meh, dont realy care for it, but she could do it in the old games so I thought it might be a good addition. Maybe just use the magnetic shoes to wall jump.
The voice. I thought that up because of all the times in MP1 when samus does a little animation that seems like it should be acompanied by a little "wtf...", and sometimes a big "WTF!!".
And then of course the whole creepy silence. The creepy silences are a part of the metroid series and shouldnt realy be done away with, but every once in a while an oracle character would be nice to give samus a little guidance. And just doing it in text would kinda piss me off, as I am playing a game, not reading a book.
Oh, and the story should be better this time around. A good story tool that hasnt been over used is the whole debate as to who should win. Instead of making one side black and the other side white, make both sides grey. Make samus' behavior slightly different because of her metroid parts, more intent on killing and less caring about her orders and her ship guy. And make the great enemy of the game an intelligent being that wants to take over the universe, but wants to do it so that he can tear everything down and make the universe better.
So anything else? Maybe a new rival like the x-samus? Maybe a rival bounty hunter that keeps his mask hidden until the end of the game where it is revealed that hes a she, and samus and her fall in love? Justin Bailey = Juity Lesbian. Name the rival lesbian Justin Bailey, but at the end of the game reveal her name is Juity, the lesbian part will be left up to the fans to discover through clever anigraming.
Well im done for now, Merry X-Samus.