I see, well the patern in my suggestions is that IMO quick offensive teleportation in your base is not healthy for the gameplay.
The BC afterburners could last a lot longer than the medivac, I picture it also as using it as a bait into mines or your army in the example you gave with muta, corruptor.
For the toss, the buff is cloak, I didn’t say remove it, but rework it in a more viable way, specially for gateway and robo units. The Mothership is not cutting it for me, something like this: Protoss Cloak Rework.