Oh my. And I thought I'm pretty high up there with my e24 idols.
Another question, If I might ask: at about how many idols possessed by an average player do you balance the talents costs? The costs go up so high it would take years of grinding to max them all. That doesn't sound fun at all. It's easy to feel burnt out.
e24 Idols is up there, I think more players are in the e20, e22 range right now, but seasons are back, so that will go up.
Players mentioned on stream before the Tier 7 talent update that they were at the e18 to e20 mark, thanks to the dungeons, so most of the talents added then range from e12 to e30 to max out, giving them goals to work towards, but also providing some power to help with going a bit further in the idol collection.
Olympian Training starts cheap, to give you some room to grow, but caps out at e29 Idols at max level, while Arithmagician Newts costs e27 Idols to max.