Wow 18 plugins released in one go. A lot of them quite interesting. I wonder how many didn't make the cut? I myself had three plugins that didn't make it.
There was obviously a reason your plugins didn't make it. Did you test the plugins? Is there a plugin already like that in the forums? Maybe bad practice?
Don't mind too much. I had four that did get approved. One of the plugins that did not get approve was for animated zombies, so I guess that, mobs are against the rules...
I am just happy that a bunch of plugins got released. Like I said some of them were very interesting to me.