Too many griefers in 2v2 / 3v3

In 2v2 or 3v3 mode, the interface should not allow teammates to attack-click allied buildings/units. There are too many griefers killing their own teammates.

I’m pretty sure I’m not the only one proposing this?

Some trolls, (Actually alot I’ve encountered lately…) start the game by attacking teammate’s base. And some actually attack allies after thinking they’ve almost won the game as troll and ends up losing the whole game.

Why didn’t Blizzard’s design team disable attack-command for allies?