If you click on "OPEN PETITIONS" above, you'll see there are 3 options: "All Petitions," "Trending," and "Popular." Unfortunately, none of them provides a simple means of determining which petitions have a reasonably good chance of acquiring 25,000 signatures in 30 days. And this is one of the most important things we need to know because it can take a lot of time to read, research, and then decide whether or not to sign a petition - even when the issue might appear simple and appealing at first.
Why spend time on "Make Elections Transparent and Verifiable" for instance, which was 23,000 short with 1 day to go? Not only did it fail to get a response, but its text and signatures were erased: https://wwws.whitehouse.gov/petitions#!/petition/make-elections-transpar...