The Arcade login screen art looks like you stole it from a 15 year old's DeviantArt page

It doesn't look professionally drawn at all. It's the bare minimal most generic, bland, and ugly art that you could have come up with. It's an even bigger insult when you consider how good the past ones have been (particularly Sona/Riven/MF login screen) by comparison. Even with animations and music off it they were just genuinely pleasing to look at.

The colors here don't match well at all. All the characters look stiff and awkward in their "poses." They don't really look like they belong together at all. It's just really bad art. The individual arts for these skins don't look this terrible (except Caitlyn's dismembered head). Why have it look like this?