Inconsistent End City Spawning Behaviors

Since it's been confirmed that one of the four available End Islands has a 100% chance to spawn an End City, it's not fair that in some Ends (such as my own) I have to give up 4 End Crystals every time I want a new Elytra. On PC, the dragon respawn can be completely ignored and infinite Elytras can be obtained. The first End Gateway to spawn should always have an End City, and the other 3 should have a chance. This is very unfortunate for those who may have to respawn the dragon 3 times (using 12 End Crystals, which are very hard to obtain) just to get 1 Elytra.