I am definitely NOT saying that this would happen with PSPW, but if the so-called "intent" of this rule is to save "unsophisticated" investors from losing money, I think the REVERSE could actually happen. A trader on his 4th trade may be inclined to hold onto his/her position overnight to avoid the idiotic designation as a "pattern day trader." News could come out during the night and the stock could plummet, thus causing a loss.