75/25 rewards should come back. Why does someone who powers up their stake and upvote someone get the same amount of reward as someone who writes the post they upvote? Misaligned incentives.

50/50 encourages people to buy stake, never post or comment, join any curation trail, sit back and relax while your account uses a bot to upvote things and you make money from doing nothing.

50/50 is not an incentive for Proof Of Brain.