If it went third person I'd like to see a lot more emphasis on platforming. The first person Metroids felt weak in that department. It could be a like a 3D version of a 2D Metroid, which would certainly feel different from Zelda. I'd still prefer another 2D game though.
"Now, a fun game should always be easy to understand - you should be able to take one look at it and know what you have to do straight away. It should be so well constructed that you can tell at a glance what your goal is and, even if you don’t succeed, you’ll blame yourself rather than the game. Moreover, the people standing around watching the game have also got to be able to enjoy it." - Shiggy







