Board Thread:Questions and Answers/@comment-26009886-20150224134002/@comment-26044650-20150224160702

I don't even bother keeping Power+ treasures for anything other than crystals, gift points and coins (although I do extract those that aren't S ranks sans crystals which I keep). With the right combi, you can make a lot of coins in one run which will allow you to buy all boosts if you really wanted.