I don't think its a good idea to ban ghost shooter clones because ghost shooter is a demo not a game
My idea is to make a sticky thread in the your creations where they can take Ghost Shooter demo and make it into an actual game with maps weapons and maybe story
If you did do that, then it would be okay. But... NOBODY has ever done that. Everyone just posts Ghost Shooter with a few sprite swaps and says "hey look at what I made."
It's the video game equivalent of "Hello World." Hello World is the first thing anyone learns when they start learning a new programming language. All it does is print
Hello, world!
on your screen.
Now, imagine that you went to a forum to learn your new programming language. Imagine that every new member decided they wanted to start a new thread to show off their Hello World program. Dozens and dozens of threads with programs that do nothing but print "Hello, world!" on your screen. Some of them might print it in blue! Or green! Some of them might print it in italics!
Hello, world!
Don't you think that would get a little old after a while? Don't you think that the Creations forum would be better suited to things that people are actually making on their own? Something original, something unique?
And besides, Ghost Shooter isn't a template. It's a tutorial. It's a lesson. You're supposed to learn how Construct works with it. It's a means to learn how to make your own games.