If you add XP in a game, people are bound to find ways to farm it especially if it gives rewards. I've noticed even without playing the update that quite a few servers have popped up saying 'XP farms' and 'Coin Farms'. So I have a quick and simple solution to this : Remove XP Gain when you play custom MAPS, you can still get them by playing custom game but only if you play Brawl or officially made maps. This will prevent people from just simply making a map that allows for optimal xp gain so they can get tickets easily.
Basically, if you play Workshop maps. No XP for you. MAYBE coins. IDK.