Rework the event XP bonus for using specific skins#433

Currently, the way it works is: if you’re wearing an event skin during a game, you get 20% bonus XP. If you don’t, you don’t get the bonus. This discourages players from using skins if they’re not tied to the current event, and by extension discourages them from buying said skins, meaning less profits.

Ways to rework this:

• Give a bonus for just owning a skin. This would encourage players to buy skins even for characters they don’t play. The bonus increases the more skins you own.
• Playing a game while wearing an event skin gives a smaller XP bonus that lasts until the Win of the Day bonus resets. This bonus can multiple times. (For example, you get a +5% bonus stacking up to 20%, meaning that after playing 4 games with an Event Skin you’re free to use any other skins you want and still get the bonus.)

The fact that you have to switch events to get the bonus is bugging me a lot. There’s no value of doing that for anyone, they could as well make all of the existing skin bonuses active at once all the time and nothing would practically change