Do you not understand that raising the threshold 4x is going to reduce the chance of the little man getting his concern addressed by a factor of 4?
My point was that the petitions I've seen on that site getting to the top are too often just joke petitions, and yet there are many legitimate petitions that don't get enough votes to meet the thresholds but should be addressed. Joke petitions have given them a reason to not address serious issues, and the more the threshold gets raised, the less of a chance that serious issues will get addressed.
If you seriously think that you can get 0.52% of the voting age population to sign an online petition, think about how much money and time both political parties had to spend just trying to get people to vote for president and how they were pouring millions into swaying 1% of the population. 0.013% vs. 0.52% is a HUGE difference even though it might not seem like it.