I love the rival - its a really fun new challenge for the game, and I hope it keeps up. A few thoughts at 28/32 quests in;
1. It seems unfair to have to use the tools we win e.g. use a lightening or 4 hammers. The point of playing rival is to get more, losing so many as you go seems to make the game imbalanced or a bit pointless? As in there would be a reason to only aim to get 8/32 before you start losing more than you win for the rest.
2. Getting 4 star boxes is ridiculously challenging. If you are to keep it in (which I'm not against), it should be for colours that are always there, e.g. I think blue and red are on every board? One is for yellows, and you can randomly get multiple boards without yellow, which just doesn't seem in the spirit of it, given it's already the hardest task?
Otherwise, I think it's great, super hard and you do need to spend diamonds to do it, given it's 1 ticket every 8 hours. I think that's an ok trade off for players to make, and it's a more fun use of diamonds than just buying the tool kits. It gives more options and focuses on (mini)game play!
Thanks inno, & still really hope you rebalance the coins (e.g. 35= 5 more moves) or 30 paws/prize thing please!!!