Why did the plot of 4Kids season 5 end up being so influential.

[neatoman]

In season 5 of the 4Kids show, it is revealed that the "real" Shredder was a demon from ancient Japan, who possessed Oroku Saki and had the ability to transform into a dragon. In order to bring him back to life, his followers needed to obtain all pieces of his armor. Once back to life he'd bring the world to its end. Sound familiar? If you spent time following any TMNT material since the 4Kids show ended, it should.

• In the IDW series, Shredder lived in ancient times and used a combination ooze and magic to mummify himself and get brought back to life in modern times. After he's killed, it turned out that he was really the avatar of the Dragon god of destruction. Bringing him back to life again would mean to bring the Dragon back too but the head was separated from the body and needed to be gathered.
  
• In the Nicktoon, after Shredder was beheaded the remains of the Foot wanted him back. A demonic dragon offered to help bring him back if they gathered his remains and helmet. This was all part of an elaborate ruse for the demonic dragon to break free of other's control and bring the world to it's knees.
  
• In Rise, Shredder is ancient demonic armor. In order to bring him back, all the pieces of him needed to be found. Once all pieces were found a wearer would be drained of all life force and possessed by the Shredder, who would then go ahead and destroy the world.

Could all this be coincidence? They're not the same exact story, so it could be. But there are too many repeating aspects here:

• In all three cases it's Shredder who needs to be brought back
• In all three cases demonic/divine forces are at play
• In all three cases the fate of the world is at stake
• In all three cases armor and/or body parts need to be collected
• In two cases a dragon is somehow involved
• In two cases Shredder is not from the modern era

So like, what's the deal? Why is this idea so tempting for creators?