Would be a really nice way to give more options to players and incentivise all players to log in and play everyday during events.
Of course, one of these 3 options would be sufficient.
Spending 1 ticket to get 25 crowns(10x times cheaper than buying tickets with crowns) would be a cool move, will benefit both the company and players, initiate players who never bought from crown store before, maybe leading to more purchases. Everyones happy. Lets go ZOS