I did not say that the X-Men films that Singer made weren't visually distinct or that they didn't have personality in terms of their aesthetic, just that when you compare how the characters look in those films to how they look in the comics, most of them don't resemble their comicbook counterparts imo because the costumes are a lot more colourful and strange (bright blue, yellow and occasionally bright reds as opposed to dark leather).
In terms of the coherence, this series has so many inconsistencies that they made a entire film just so they could say 'we're not counting this or that thing that does not make sense anymore'. The series is a mess on that level but I think that's why I like it because each film feels like a distinct work of cinema and not just an episode in a really long and expensive tv show on the big screen.