Very good reasoning, @sirknight, and I would like to add two more points to it:

It is hard to believe authors of a quality content would fare better with 33% less reward, while the number of votes is still limited.

A rule of a thumb would be: More curation rewards, more of the reward pool goes to the bot operators. That would hardly stimulate authors or even new members.

I still think that the greatest improvement to the system would be an implementation of bot-checking system, or we shall soon have…