I honestly see no use in this suggestion. We have in the shop an AP Recovery item which costs 100 coins which will let you recover your streak.
Though, if you want to buy shields, it would make sense for it to also be 100 coins and again it is recommended to play to get them free, buying should be a last case. The reason why I don’t like this suggestion though is because there was a time where the highest AP streakers were rewarded with a rank, while if this happens again, the highest streakers will probably just be stocking up on shields rather than having the achievement of continuous playtime.
