Oh the boost stacks? That's brilliant then, and I have no qualms. (Unless it stacked infinitely, perhaps then a longer cool down, but it seems OK as it is then.) knowing that I must say the drones really are excellent and original and that I love them.
The Inventor Hero is really cool, with the same drones and tech expertise as I would expect. The many different powers are interesting and have some useful and interesting uses, you can make her stally, ranged etc. She seems pretty cool, although something like Emergency Evacuation may be too micro managey for the fodder barracks in KRO. The failures are innovative and really give a sense of character, although they would need a low change so I don't rage so hard