I think a lot of this outcry could have easily been avoided if they dropped a Diablo 4 title card at the end of Blizzcon like Bethesda did with ESVI. Everyone knows ESVI isn't going to be out for yearsm same with D4 but having Blizzard make comments throughout the year to get Diablo fans excited then little a month before the con pull back and try to temper those expectations wasn't ever going to work. At this point all Blizzard ended up doing was pissing off diehard fans and giving the Path of Exile guys a reason to open some bottles of champagne because that gravy train isn't ending anytime soon with how Blizzard has been going.
People have been saying this for years but still I think you are right. Another con and again the thing I'm most excited about it another remaster of an old game. The only Blizzard game I still play now is WoW and frankly that's only because of the years long friendships I've made there. BfA sucks, the class design is terrible and frankly I'm at the point I don't want to log on because I'm not having any fun actually playing. Maybe they turn it around with some patches but at this point I think it will be another expansion before they even give class design a serious attempt.But whatever, Blizzard is going down the drains real hard.