Honestly, I think it's a very bad PR move on Niantic to do this EX testing for so long, and putting the reward which is the highest neutral dps pokemon in game, and yet do their selection such that there are people with multiple Mew2s while the mass majority are "excluded" in this EX raid....That's the reason why so many ( especially those who spent so many raid passes ) are dulan with Niantic...
Just release Mew2 into normal T5 raids after the beasts end, and if they wanna do EX tests further, put those other mons like Ho-Oh, Mew or Celebi etc instead....It's been so many months from Mew2 1st appeared ( in Yokohama event ), and this wait is too long liaoz....