I didn't know the 30 day rule wasn't working. The way that I understand the 30 day rule is that it's not meant to punish people but to try and get them to complete their transactions, and only upon failure to meet their end of the obligation are they subject to placement on the PL.
Whether you complete the transaction within 30 days is arbitrary since either way, from the time of the nomination to the sending notices through PMs and giving the offending party time to answer the notice many times it's longer than thirty days and usually the offending party will try to redress the matter before being placed on the PL.
And the problem with sellers setting terms is that every seller will set their own terms, further complicating the matter. Imagine seller states, "payment due within 3 days," would it seem fair to place the offending buyer on the PL for failure to pay within 3 days. Or if the sellers states that the "item will be relisted." If the item is sold, how can the offending party redress the matter, he has no recourse for remedy.
NO, I don't see what's wrong with 30 days to complete a transaction. Either way, by just bringing the matter up on the Probation discussion, that in itself is like a public hearing, where those who participate here are judge and jury in a way and the offended party is the executioner.
Either way, generally speaking, you wont have both buyer and seller take the full 30 days to complete their transactions, either the buyer will be tardy and the seller prompt or the buyer prompt and the seller tardy, either way, 30 days is plenty of time for you to see who the offending party is.