Another Use for Champion Shards

A lot of players get to a point where they don't have anything left to do with their IP. I think that it would be a good idea to be able to convert A champ shard + blue essence into a chroma. It is kinda annoying that the only way you can get get chromas is by RP without waiting for 6 months to a year for them to be on sale for 2k IP. I don't have any idea of exact values, but this is my idea.