MPV icon redesign
Current icon is not on the Numix level of greatness. I know that the original MPV icon is not a piece of art either but current icon is generic and bland. If you just make a flat version of original MPV icon it would be a way better.
I agree with @daffc32 it's definitely time for MPV icon redesign. This is my humble sketch how I think new icon should look. it's amateur work, I'm not a graphic designer sadly, hope someone can work on this idea if people find this worth working on.

@JazzJ I appreciate the effort, but that's likely not a design we'd go with. It's not matching the upstream branding which is part of the issue but nor does the symbol idea fit well with our design guidelines.
Looking at the original icon I still see just a triangle. On top of a circle and a two-tone background however.
@Foggalong Oh, I see. Would something like this be more acceptable?

@JazzJ It's closer, and whatever we do will likely look something like that symbolism wise, but the baseplate wouldn't be something we'd do guidelines wise.
I like this second suggestion from @JazzJ very much. Simple, elegant, that's a Numix style. @Foggalong SMPlayer has the same icon as MPV. Maybe SMPlayer can use a different shade than MPV?