This came about in large part because of the new coordinated firepower command card.
Can I spend an aim token off a stormtrooper unit to reroll zero attack dice? Aim is “up to 2” (or 3 with the precise 1 tossed in).
As I read the rules, I could. This would allow a unit who has max number of possible hits to spend an aim token, allowing another unit that hasn’t activated within the specified range band of acquiring the aim, despite not rerolling any dice.