But, pre-buff, it was quite literally one of the worst drones in the entire game? Of all my time spent in top ranks, I can't recall a single opponent who used Swoop. Damage to weight ratio is a poor choice of comparison for meta items as it often times inaccurately represents how well an item actually preforms.
Right now I don't see too big of a problem with Swoop. It is much stronger now, yes. However it still requires energy, and has pathetically low damage output. I suggest waiting for the proverbial dust to settle on this one. Give it a few weeks, and check to see if energy has developed a way to exploit Swoop's en cost. Otherwise I agree that a very small nerf might be in order. I don't have one myself, but I don't think we should jump straight to "nerf it to hell" immediately. It is a premium item after all, it's supposed to be good.