I like the Two Tiered idea. I insist on the moderation idea or the site will die. I think there are plenty of folks here who would volunteer to help if they got a little increased percentage in their share of revenue. That should be easy enough for a programmer to code.
I also agree there should be a bot prevention method on downloads that requires input from a live person that a script couldn't do very easily. I think it would help cut down on the script kiddies increasing their views artificially. I don't think timers on downloads are a good idea. They don't stop bots and only annoy the people coming in to the site who help generate the revenue. That would be bad.
It is a miracle that curiosity survives formal education. - Albert Einstein