Currently, Vacuum destroys trees at its center, but not around pulled units, making it possible for enemies to get stuck in trees.

It would be better if it would destroy trees around the unit during the pull instead (or have it both, destroy trees at the center and around pulled units). This would make it more consistent with other pushing abilities, which usually destroy trees around the units. It also looks much better.

Here is a comparison between destroying at center only, and destroying around unit and at center (I reduced the center radius of my version)