If it's a remake, Super Metroid would be the logical next step. If they leave it more or less untouched design wise, sans perhaps a few modern conveniences, I would be down. It would probably be more a remaster. Game could look gorgeous in a variety of styles.
A new Metroid 5 would be cool...but for me, also disappointing. I would rather see the franchise move forward with the Prime formula. Imho, Prime should be the mainline, 2D the side series.







