You know what bothered me at the last reset on WoA? How quickly some people * cough cough * made it to the end extremely quickly because end portal frame blocks were craftable. Most of these people were adept in gaining the required resources and were raiding end cities while I had just found the biome I wanted to settle in and began punching trees. Cant say for sure, but I think it was on day 2 from the reset already.
Lets keep it vanilla and have people look for it, that way everyone wanting it would need to grind endermen, then embark on a grand search, and if the one who finds it wishes to make it public, they can do so.
That, and at launch, people will probably go out exploring all the different biomes, searching for a spot to make their home which will most probably cause lag on its own, we don’t need people doing that with elytras.