I'd love Vanillaware to take a shot at it. That said I'm perfectly ok with another TNxNintendo collaboration. I want Retro to stay FAR AWAY from Metroid. They gave us 4 titles and I think thats enough from them on Metroid.
I loved M:OM and wanna continues to see 3rd person/Sidescrolling Metroid. First-person was fun but I'm worn out and I think there are more options with 3rd person gameplay.