Selectable trigger bot ai

It would be great if it would be possible to select trigger bot ai more than hug the enemy, like: stay near player, keep half screen away from the targeted enemy.

The reason is that there are skills that do terribly when triggerbots hugs the enemy. Example- ball lightning or eye of winter lossing half or more damage from being fired from point blank range. How could it be made? Like blood and sand toggleable buff.