88% it is already too much. It is fine to stay to the same 80% atm. Human status 94% it is the same. Maybe too much.
I think he we are talking about our flips score not validation score. I think that it may be too harsh especially together with p5. "Human will have more word combos and will need to submit minimum 5 flips." I think that giving ability to create extra flip or not is good for flips quality.
I think that it looks healthy. Degradation only those humans/verified that are toxic for network is good but ~90% is to harsh. Those with ~60-70% good flips deserve that not ~90%. ~90% will half number of verified and human accounts.