2v2 Coop Suggestion: Decide attacker/defender before game

My suggestion is to implement a subtle way that allows for positions to be suggested pre-game without typing. This saves energy and lowers carbon output. The control- click function is great for allowing communication in game without typing. Why not take away the ritual dialogue of "att? who def?"

Example: Position 1 and 3 are Blue colored (Defence), Position 2 and 4 are red colored (Offence). Even more subtly, just the position number. Or, a tower icon (defence) and a creep icon (offence). Or a small word saying "attack/defence" next to positions. Possibly a way to toggle with your partner, or select a mark.