I didn't mind the NPCs in Corruption as much as others, but I do prefer the sparse characterization of U-Mos and Quiet Robe.
Samus herself has had a lot of range: talkative in other M, talkative but unvoiced in Fusion, silent in the classic 2D games, silent but with lots of character in her body language in the Prime Trilogy & Samus returns, and talking just a bit in Dread (and screaming lol).
My ideal combo would be U-Mos style NPCs and a Samus that talks just a smidge more than in Dread.
What do you think?