My son stiffles my creativity

Desi has a tremendous imagination.  I love to watch him play with his toys.  Action figures, stuffies, whatever.  He is really great at playing by himself and creating worlds to play in.

However...when I play with him, I get nothing but rejection!!!  Let me give an example.

Last night, Desi asked if I would play with him during bath time (meaning he's in the bath and I am kneeling outside the bath, perverts).  I said sure.

He has a collection of superheroes that he plays with in the bath.  Recently a couple of Transformers were added to this collection.  Apparently, the super heroes (which for this run consisted of Wolverine, the Flash, Batman and Hawkman) were supposed to be trapped on a raft in the middle of a poisonous ocean.  One of the Transformers, either Optimus Prime or Bumblebee, neither of whom transform into boats, for the record, would save them.

Okay...so here's what went down.  I was playing the role of all of the super heroes.  Wolverine was trapped on the raft.  His super-friends (one of whom can fly and another of whom has a both a boat and a helicopter) are standing helplessly on shore hoping someone will save their friend.

Then...Optimus Prime, in transformed position, races, underwater, to the raft and rescues Wolverine!!!  He takes Wolverine back to the shore to be with his friends! 

Here is where I decided to improvise a little, because I am creative like that. 

The friends are so excited that they rush over to Wolverine to make sure he's okay.  In the excited commotion, Batman falls into the poisonous ocean!  "Oh No!" I cry.  "Batman is in the poisonous ocean!  Who will save him?"

Expecting Bumblebee to dive in, I was shocked to hear, "NO DADDY!  That's not what you're supposed to do!  He has to be on the raft!!!"  At which point, Desi goes all diva, breaks character, removes Batman from the bath, puts him back on the ledge and proceeds to instruct me to put Batman on the raft so he can be saved.

I mean, come on!  Clearly we have established that the Transformers can drive underwater.  What gives?  I can't work under these conditions.