I think 3a should be wiped and given a fresh start, as well as making all 3a items from clues stupid rare. I don't agree with the removal of stacked clues. It wouldn't be fair because I know I as well as many others save up their clues before doing them. Especially the people saving up 150 so they know they can get the clue sack as soon as they have enough.
Classic is an ancient game mode. It's the closest experience we have to OSRS. I will support any and all changes towards Classic. That being said, I think all of the above should be implemented into the game to draw more players to the Classic game mode. It's already a nice grind with the 5x rates, so adding a little bit of incentives would only be a positive turn out. I know most everyone plays Normal or Ironman, but us Classics would greatly appreciate it if you all would offer your support in keeping this under appreciated game mode alive.