I know what you mean, I tried to show the differences to a friend who's a casual Nintendo fan, The only things he noticed without me telling was how Wario's colours were different, and very few pixel differences.Love how BlueJackG is willing to showcase this mod. Would do that myself, though I think I'd struggle to show people what's so different about the mod given how few of my followers are die hard Wario fans like us here.
Once I showed him some more concrete differences, however, He began to notice how bad some of the pixel errors were.