On the other hand I believe next few mind milestones will give meta knowledge modificators as (how it looks) the game mechanic is created by AI and than just patched by human.
Is meta human generating slow? i don't think so it's 1-3 MH per day... pretty ok for idle game IMO
The fact that superhuman cost increases each time, means you realistically can only get so many, especially since superhumans are sort of a limited resource given that the humans price increases each time you prestige for them
