I was actually gonna post about "black lines" but that ISN'T part of cell shading. That is another stylization entirely.
It just accentuates the shading better.
This is literally cell shading.
Yes, this is the style that "The Wind Waker" uses in game.
However, the game that pioneered cell shading was Jet Set Radio, and that game had thick black outlines around every single thing in the game.
So really, cell shading by definition is what was in Jet Set Radio.
And I think that kind of shading style would work well with blockland.