I still like to push my Protoss addition, an energy upgrade for Sentries:
It’s possibly a little awkward, and things like cost and research time may need to be tweaked (the Robotics Facility requirement may be unnecessary). The idea is that newly-built Sentries can cast Guardian Shield as soon as they warp in, providing a soft defensive option for when one is caught by surprise by a drop, Battlecruisers or Mutalisks, especially in the lower leagues. Granted, it’s still an expensive defensive option since you’ll be spending 100 gas. For more offensive options, it also allows hallucinations right off the bat or, once again, a simple Guardian Shield if one is created under a Warp Prism on the front line.
At the moment, the stats are as follows:
- Name: Khaydarin Matrix
- Structure: Cybernetics Core
- Effect: Sentries start with +25 energy
- Cost: 150m 150g, takes ~85 seconds to research.
- Prerequisites: Requires Robotics Facility