Just why? I think it's obvious that Toribash is not a game that is supposed to be graphically impressive, it's actually intentionally simplified in terms of graphics, with 99% of the game being basic shapes, such as squares and circles.
Shadows is such a small fraction of a game, being not visible at all when no shader is applied. There should not even be any further discussion, it's as clear as that.
Also next time think twice before making a post in such board. It's okay to shitpost in wibbles, but if you're making a suggestion thread at least take it seriously and base it on more than one word.