If they had made a new armour it wouldn't have mattered at all. Nobody complained about Sharpwing, but were extremely annoyed about Avian. Difference being Sharpwing wasn't an event armour.
Not to mention Harmonic+ is an armour that many hold dear since it was the raid where Untouchables defeated RA for the first time - MANY gems were spent, I know some in RA spent 15k or so trying to defend the plus. People raided for 48 hours straight just to see some level 15 running around in one they can't even get to first evolution. It was a hell of a trophy for Untouchables and has been hugely devalued in a few short weeks.
If they aren't winding it down and are just instead trying to 'level the playing field', they are completely deluded. Gems and chests are still stupidly expensive with no sale. We have had 4 more T1 regulars quit in the last 24 hours because of Gree's treatment of their customers. How long do Gree think it's going to take to get new players spending in the kind of volumes current pushers do? Their game will be dead in the water by then. The allure of KnD for many is built around the community - Line app, alliances, rivalry with other alliances, it's something that has grown over time to become really quite extraordinary. The game itself is a relentless grind which gets tired fairly quickly. It's all the other stuff that gets people spending -loyalty to their alliance, guild and friends they've made over the time. Without organised pushes, the alliances will diminish, newer players won't have anywhere to go to guarantee they get the armour they want and they will stay in their own guilds and not become addicted to the thrill of pushing (spending) like so many others have done.
The silence from Gree despite the outrage on here and FB is deafening.