Personally I think everyone has just run out of ideas. I have nothing against the TV show although with all that nudity you would think we'd get to see Sarah Conner's boobs just once.
Most of the new games that come out now are just the same old games with different pictures on them.
Someone needs to start putting out game concept contests. Maybe the public can come up with some better ideas. Every sport has been done to death. Most well known historical civilizations have been represented.
Most animals have been used including tigers, pandas, penguins, kangaroos, cats, dogs and toucans. All the well known super heroes have slots now.
Many of the old religions have been used like Zeus, Thor and I think Top Game even has one with Shiva? You can't use the current religions of course. If you used the prophet Mohammad as a scatter every bonus feature would cause 3 riots.We have dragons, pixies and leprechauns. Sexy nurses, romance, Christmas themes, goblins, vampires, Pinocchio, the Phantom of the Opera and Alice in Wonderland although the names have been changed to protect the innocent.
It's like making porn. We know in the end someone is going to get screwed. We just need to build a story around it first.