:D I have a few ideas already on my todo list:
1. devices that would allow grabbing them without the health drain (or making it much smaller).
2. weapons that could be used to turn purple orbs into blue ones (these weapons would also have other uses).
3. devices that would let you control such an orb and push it into an enemy (or just away from you).
4. robots that you could pick up that when held, would suck purple orb in and you could either use a station or consume it directly from the robot.