by JDK002
As others have said, the "Sweep" action will vary from game to game. However I would say the people you're playing with must not see the the advantage of it.You can purchase upgrade cards the same turn you sweep. This can give energy hoarders a huge advantage when digging for cards and buying them as soon as they come up. Getting that card that gives an extra re-roll, an additional dice, or even +4 VP can be a game changer.