02-28-2018, 11:29 PM
I feel that the additional rule could be a bit confusing. It seems to imply that you can do anything, as long as you make it look like pixel art. The best definition of pixel art I've ever seen is that it requires absolute control over every pixel. Tools like fill and copy/paste just make easier what you could have done by hand. Things like line and circle can be explained as sort of references and, as you mentioned, rarely look good anyway. Things like gradients and automatic smoothing, however, are a bit too automatic to fall under the definition.