Consider:
Invisibility/Superdash needs a cooldown.
Most players aren't "Gods" with this class, but others really are. I see quite a lot of 30-2's with this race.

An well played invisible vagabond pretty much assures that a ct team on an open map cannot defuse. I know about the flashlights and the tracking. It really is hard though to track them above the physics of the map 50 feet in the air invisible with a flashlight. Make all invis classes completely visible on plant or defuse could work too.

Not a whine, an observation.