As a bought coven player, the current coven ticket system is horrible. I personally play coven not because of the roles, but because there are smarter players without the super serious atmosphere of ranked. Coven tickets remove all of this. Coven is now classic 2 electric boogaloo and there's nothing bought players can do about it. So here's my idea for a rework.
After 50 total games played, you are awarded with 3 coven tickets that function the same way as the current ones do. However, unlike the current ones, you cannot gain any more, and if you use them all then you cannot play coven unless it is a free weekend or you buy it.
Alternative rework
Keeps the same system as before, but coven ticket players are queued with coven ticket players and coven buyers with coven buyers.