I'm sure the Queen+Alibaba compound piece has been invented before. It's a simple enough piece that this is pretty much inevitable.
However, since this game is not part of your Cazaux family of games, the piece will not share the same name as your piece. However, I might rename the Queen in this game, since it is different enough from the Chess Queen that such a change would be beneficial.
As for your version of the piece, I think piece names work best when they are paired with a matching or appropriate symbol. The Medusa name would be ideal if you want to continue using the symbol you are using now.
@Jean-Louis Cazaux,
I'm sure the Queen+Alibaba compound piece has been invented before. It's a simple enough piece that this is pretty much inevitable.
However, since this game is not part of your Cazaux family of games, the piece will not share the same name as your piece. However, I might rename the Queen in this game, since it is different enough from the Chess Queen that such a change would be beneficial.
As for your version of the piece, I think piece names work best when they are paired with a matching or appropriate symbol. The Medusa name would be ideal if you want to continue using the symbol you are using now.