Is it possible to teach people what is and is not a legitimate complaint? The industry certainly doesn't seem to know.
Regardless, the one thing that I think pokemon desperately needs is to clean up the evo mechanics to make it smoother. All of these incenses don't need to exist. A lot of the trade+item ones don't need to, either. The Dawn Stone needs to bugger off and be turned to normal gender specific evos. There's a bunch of other things as well that are made needlessly complicated simply because the state was not there in the previous games. Yes, I will even include Megas on this. It needs to be smoothed out, but nooooo, it's cheaper to just add onto the existing code than to rewrite it.