I completely agree with this; cannot count the times I would not have pushed to get all 9 tasks done with the SOLE purpose of getting those 5k Star Coins -- I assure you, that motivation/inspiration will NOT be there for the measly crystals once I have my nerfed Star Coins for the week. You can kiss running Besieged City or Sinbad and the Sea Snake ever again, and even any coops since they are hard enough to get non-PF players to run them with.
Wrong direction folks.