[Forums] share menu between espaces - how to do that ?

I have a screen that can be used in two modules (espaces) and I would like to keep the menu from the application that is calling it. I am avoiding put this screen inside a block because the actions will be in the main content section instead of actions section. On the other hand, I will not copy this screen to put in another espace because I duplicate the code that I have to maintain.
Someone has some tip to solve this in an elegant way ?

Thanks