Yeah, I intend to show video proof that it's not possible to Wondertrade/GTS unobtainable pokemon this evening.
That GameFAQs thread Hozu linked too, also came to the same conclusion. That you can put blocked Pokemon on GTS, but no one will find them. And even then, you can't really can't complain that you can't go online unless you can really convince anyone that you might "accidentally" offer to trade for an obviously hacked Vivillon pattern. That's just crazy talk.
That GameFAQs thread Hozu linked too, also came to the same conclusion. That you can put blocked Pokemon on GTS, but no one will find them. And even then, you can't really can't complain that you can't go online unless you can really convince anyone that you might "accidentally" offer to trade for an obviously hacked Vivillon pattern. That's just crazy talk.