When they going to rotate out that one mode yet?

This beta mode called summoners rift is cool and all, but I think it's lacking revenue wise... like the auto chess one has these little leguns that you pay a lot of money for to get ur favorites one, so whats the deal? can't wait for something fun and engaging to come around so I can dump all my money on ya' know? Eternals would be dope too, only 850, seriously what a steal! riot is probably gonna go bankrupt