on the drawing board
Still in the planning phase or under consideration and thus not yet ready to be implemented or put into practice. While the government's plan to improve air quality remains on the drawing board, the number of citizens falling ill from air pollution continues to rise. We have a few different ideas for how to increase revenue, but they're all still on the drawing board.
on the drawing board
(of an idea, scheme, or proposal) under consideration; not yet put into practice. To get something off the drawing board is to put something into action or to realize the first stages of a project.
on the ˈdrawing board
being prepared or considered: It’s just one of several projects on the drawing board. on the drawing board
In the planning stage; under consideration.