At this point it goes beyond the overpowered metas, the unbalanced runes, etc. All of those and more contributed to the EXTREME problem and your new changed to guild quests make it even worse.
Because so many people are fed up of PvP they aren't doing it as much or at all. This means that they stay in the bottom tiers and the only people who advance are either the insanely overpowered players or the ones who hadn't given up yet. Combine that with the hugely increased cost to go up a tier or sub tier and you get the incredibly powerful still stacking in the champion range.
This evening I got the play 3 PvP quests and in multiple free refreshes from my VIP that I earned supporting this game I wasn't able to find a single team I could beat. 9K power shades, unbeatable emilys, over runed reptiles combined with MK or Kai, 8-9K MKs leading the way. NOT ONE TEAM I COULD BEAT and this is at champion 1 for a player who is VIP 10, has all the heroes and all epics and almost all heroes 6*. What I don't have is a ton of superior runes which almost every single opponent I inspected had AT CHAMPION 1, not Warlord, nod Legend, Champion 1.
So I'm done, I'm joining all the others who opted out of PvP. It isn't worth my time at all any more and I'm not sure the game is worth my time or money any more either. I will echo what has been said so many times I'M NOT HAVING FUN. I DON'T WANT A MOBILE GAME WHICH IS A SECOND JOB.
MAKE DB FUN AGAIN You have failed to make DB fun again now I won't spend another dime on this game