Suggestions on left over event tokens

So I have spoken to a fair few people and they all say they don't want to use the leftover event tokens because it's too tedious. If possible I would like there to be a button when the event is over and you still have tokens to automatically spend tokens on random things going in rarity and price. For example, say you have 120 night and dawn tokens. The auto spender would get you one key one champion shard and 100 blue essences. This way players can spend less time spending all the tokens and more time in the rift.