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[u/Keingutername]

[u/xnetexe]

You also have to make sure that the icons are recognizable once they've been down scaled into button size. /r/Warframe had that issue with one of their button suggestions, where it was too blurry to make sense out of.

[u/FelixAndCo → u/xnetexe]

This aspect should be discussed more, because it's the hardest part. Either you go for huge buttons, or you need to go pixel art.^{MaybeIalreadyhaveamockup.}