Suggestion for riot. Champion "rentals"

i know league already has rentals for champions with the crafting system, but thats not what im getting at, I really want to see a renting system thats very similar to how smite does their god rentals. where you can play a god for 1 day for 300 favour. and more days cost more points. This i feel would make new players play many more champions that look cool and they dont have to worry about saving up ip for a new champion. This would encourage people who are new to the game to try out Many champions besides just the ones on rotation and the ones that are 450 ip.