Whisperz: It sounds like you've got some good solutions there!

I was thinking that instead of making it optional for a player to place their returned piece, it could be an automatic reflex.

Example: The king is Imposterized, the piece is returned to its owner for immediate placing on the sqaure that is chosen by the opponent.

OR it could be made optional to place the piece immediately after it is Imposterized, and perhaps it could be sent to an "Extra Pieces" pile where the Imposterized pieces could be kept until such time they are used. Like having a secret attack plan!

Now we have a new debate, should the "Piece Return" rule be optional to the player OR automatic?

Magenta Spiral
Imposter Chess© Inventor