Hydra Clash - one step forward, two steps back
So, let's get the good part out of the way - the general structure of the event is solidly implemented. Aside from tiny bugs here and there, the format works.
Unfortunately, the event itself is just a giant move backwards. Plarium, you clearly added the quick battle to CB because you understood that there were too many things which required our time. By making Hydra Clash top reward require as many points as it does, you're surely going to be "forcing" people to run Hydra on manual, or at least manual-ish - eg on auto but watching the screen to make sure nothing goes wrong.
And that is just a ridiculous timesink. That is *hours* every week spent on Hydra, to maximize the points you get - and that's assuming you don't need to restart. You know what that causes? Burnout. All it does is makes people even more fed up with Hydra, which doesn't help when you're trying to get your clan to actually clear them.
The first, and obvious solution, is to change it from every week to every other week. But that's not enough. The boss fight itself is just too much of a slog. At very least, reduce ALL of the reward tiers - not just the bottom one. I'd go so far as to halve them all. It should be such that if you get top chest in Hard/Brutal/Nightmare, you get top reward chest in Clash.
Of course, there's still going to be the "problem" of the actual clash part of it. And on this note, I'm not sure I understand how the actual event is set up. Are there "clash tiers"? Or are you just matched against random clans? And, if there are tiers, do the rewards change as you move up in clash tier? I'm going to assume, since there is nothing otherwise indicating it, that there aren't better rewards. That's ... fine, I guess, since it means you'll eventually settle into a bracket where you're going to win once in a while, but it feels weird since it surely will mean that the "better" your clan is, the harder it will be to get ... the same rewards?
