What someone above said about I don't have a problem with it, but there's some I wish got megas that haven't and show no signs of it in the future, and some that I really wish didn't get megas, that in my opinion really don't need it. Namely giving just about every psuedo legendary so far a mega. Point and case in Tyranitar, really why? It doesn't change distribution significantly, it doesn't change typing whatsoever, it gets no new ability that changes its playstyle, it keeps sand stream and stays focused in all the places it did before. :/ Mega Aggron I can get, because it drops the rock typing, and foregoes all hopes of other things by taking on Filter as a purely defensive ability with pure steel type, sacrificing stab head smash and rock slide, and dumping that mega stat boost almost entirely into its already high defense.
Even something like Salamence I can see, because it can finally use flying stabs with aerialate, but where are all the mega lopunny stories? It got no usage before, and probably will now.