Idea for champion mastery 6 and 7

I think it would be nice if you could get mastery with IP you would still have to get the S ranking twice of course but I know a few people that have nothing better to do with there IP it would also make it less annoying to try to get it through hex tech crafting and hope you get that champ shard keep what you have now but if you add able to get it with IP that would be great