I've noticed that LE typically siezes markets that have been operating more than 2 years. So, what if someone creates a market that is going to shutdown after a set amount of time (less than two years), and then deploys a new market? Maybe a different name and interface, but same internal structure. The shutdown would be graceful, and the re-deployment will not be announced (the users won't know for sure that the "new" market is the same thing)
Do you think it would keep this particular market under the radar compared to a market that goes for longevity?
Don't think time, think market share. Market share naturally increases as time goes along (and people hear about it). There's no point dropping millions of dollars into an LE operation to take down 4 vendors, 26 buyers, and 1 bored admin.