Boss Mode, Please!

I've been wishing for a long time if we been able to play as all the boss characters in that game and this is what I've been imagining. On the left side of the button switch team it says boss mode then when you click it instead of showing options of the other characters in the game it shows all the boss characters in the game. Like for zombies in boss mode it shows all of the zombie boss characters, and for plants in boss mode it shows all the plant boss characters in the game. So please if you awesome workers can please add this stuff to the game THANK YOU. ps this game is awesome!!!