That's kind of cool to consider though, there's always been water, except in Metroid 1 and... what, hunters? Corruption? But RoS, SM, MP1, MP2, MZM (barely), and MF all have water or (lately) ice areas. We've seen an ice area in the trailers, and either the game works like Fusion with sectors or it's a holodeck. I don't know, it just seems reasonable to expect water. The physics of it will be interesting for sure.
Oh jeeze. That's too bad. Purple was a fitting, feminine yet still strong color. Definitely has always been my favorite suit, it's weird she gets it again later in Fusion tho.