Is Riot not wanting to force theme team comps?
What with only making three pool party skins (instead of five) and only three PROJECT skins (also instead of five) are they not wanting a ton of players to all pick up those skins and play whatever janky comp that they comprise? If that's their reason then that's actually rather noble because they would get more sales on skins if there were more. Goodguy Rito strikes again?