Actually (after you deleted Good Form) there are only 2 Drone upgrades: kick and get up. I have some ideas for them:
1.Higher attack speed
2.Higher move speed
3.Two heads (they have to headshot you twice)
4.Higher jumps
5. Kick II, III etc. (kick will wtrow them at greater dictance, and will knock them for longer time.
6.Four hands (you can use them if you loose both)
7.Repair (you will be fully repaired after every level)
8.Regeneration (during battle)
9.Rage (uses energy and gives you much higher attack speed for a while)