Please tell me who they're creating pokemon for? They surely are not creating it for themselves if they want profit and cash inside their pockets.
Maybe creating isn't the right word. They are naming them as Japanese people for other Japanese people.
And no one is asking them to alter their "original idea."
You are. Mr. Mime was not created as a male-only Pokemon. You are asking that they basically make it such by creating a female evolution for Mime Jr.