Honestly, I wasn't a big fan of Sky Blocks, but since it's been suggested so many time, I would like for it to come back too.
From what I am aware of, Sky Blocks hasn't been spoken about. Just like I said on another thread, you have to keep in mind that with which ever game we had on the server, we find ways to make it more original and make it stand out that from other servers.
Put it into perspective. Create a Sky Blocks suggestion thread with original ideas and stuff that have never been seen on other servers. Depending on how good the ideas are, we may be convinced and consider it.