If they are able to get in once, then in my opinion there is no reason to ask them to post another application since we already knew through his past apps and behavior around here, except if they are being a dick or doing something that we cannot tolerate. (I forgot his name, but I guess you guys still remember someone who claimed to be a pro soccer player.)
We pretty much accept anyone as long as they are mature, rational, and active. If they used to be a Piratez and get to know us, we will of course be happy to accept them back.