Astetics weather you like to admit it or not are one of the most important things in games, Next to gameplay and stability/balance. >.>Quote from Rumblethumps
I don't really see what difference it would make if they went up walls vertically or horizontally...,It wouldn't really change anything.
I mean, If all blocks were gray and had the names of them written in black on their sides would YOU still play this game? I think you'd get tired of GRASS GRASS GRASS GRASS SMOOTHSTONE WOODPLANK sooner or later.