After some testing, we noticed that if we had an .onion domain, we would have to disable TOR posting altogether, making the .onion domain nothing more than a vanity in cost of also blocking TOR IPs which are posting from guro.wtf domain. No need to worry though, you can already post from TOR if you are accessing from guro.wtf domain which forces SSL connections, so an .onion domain wouldn't be able to grant you any better anonymity than that.

It's worth noting that most of the time old GUROchan had an .onion domain, it was a fallback option which they would use if something happened to the clearnet domain. In fact, GUROchan was once only accessible via TOR because the clearnet domain had some issues, however, this is unlikely in this iteration.

Also, please remember to read the rules and title your threads in the future.