Thanks for the suggestion Commander but as you might know the team is no longer accepting the game improvement suggestions because the game is at an optimal development stage.

without any bugss?????

Bugs will be fixed of course but no new features will be added.

I mean closing and reopening the game is just 2 clicks instead of 1, I don't see how this would be worth spending dev time on when there are other features that are needed far more (such as the ability to return defense from emitters).