Reverse Engineering the platform. Well we aren't able to reverse engineer the Miiverse servers, but we could analyze the protocol and write a new server software and patch the server-adress the WiiUs think it's the offical MiiVerse server. Writing the server software if someone cared enough to take a deeper look into how the protocol works which is used between the WiiUs and the MiiVerse is something every average programmer can do, if you want it properly done it needs abit more knowledge then the average hobby programmer has but nothing to fancy. I don't see much hope for a backup of the offical MiiVerse, we most likely have to start again with a empty MiiVerse (maybe expect of some contributions from people that asked Nintendo to give them a backup of there MiiVerse content, which is a service offered by Nintendo btw)
Thanks so much for the information, it seems the hardest bit in reality would be the moderation, one can only hope the petition carries some water.
Thanks for putting it in layman terms too, I need the instruction book for everything