ARP: Incentive for upgrading traits

I propose a modest change to attract and retain more users with a limited bankroll by adding BRS when an Aavegotchi possesses a certain number of "mythical" traits.

If an Aavegotchi has 3 traits in the mythical class (e.g. 0-2, 98-100) then they get +25 BRS. If they have 4 traits in the mythical class, they get +50 BRS. This rewards users who already possess rare Aavegotchis, while incentivizing users to buy basic items to reach that threshold. At the same time, this many mythical traits is rare enough to not dilute the value of mythical and godlike Aavegotchis.

I believe this change will give users with less funds a second chance to own a rare Aavegotchi, increase the demand for common, uncommon, and rare items in the Bazaar, and make the game less about buying items that are as expensive as possible and more about deliberate selection of an Aavegotchi with high potential.