One thing- as a Toa of Psionics, Cevis would already be capable of telepathic communication, thus rendering a Kanohi Suletu redundant. And the commonly seen image of the Suletu is that of an organic one, Kongu's to be exact, which is why it's half rough and half another sculpt.
Other minor issues- slate blue transparent pieces- I don't think Lego has produced those? I say that because Bionicle eyes are typically represented by a transparent piece slotted inside a face piece, so that when light shines though, it looks like the eyes are glowing. Other minor issues lie mostly in lexicon, being that machines/vehicles are called "mechanicals" more often than not, and that there aren't really computers in the Matoran universe as far as I know. At least ones the Matoran have/use.
Other than the fact that powerless masks can sometimes/typically do have different shapes than their Great forms, and the aforementioned issues (unless her mask will transform when she does, as will those on my Toa, to a Kanohi Huna for Vhis, and a Kanohi Rahkuta[Mask of Rahi Control] for Hura.)