QoL Suggestion for Normals
Enable all champions in normal game modes (draft, blind, aram, and the likes). & Only allow champions you have purchased via IP/RP on ranked.
Want champion diversity? We can't have that if people are only willing to spend their hard earned IP on OP champions because IP gains are absurdly minimal on top of having to purchase runes in order to have a fighting chance in lane.
By enabling all champions in normal game modes you give us the opportunity to test out any champion we want before we consider buying it instead of waiting for some handful of random champions per week.
Or you could give all the players access to PBE you stinges.