Im not sure if this was intended behaviour, but at the moment players can ‘stack’ a new drone on top of the existing one, allowing it to reach ludicrous heights. This takes away the vulnerability of the drone, making it hard to get with goliath and kraken and damn near impossible with behemoth and probably wraith.
You either spend too long trying to take it down, have to deal with sheilds all the time or move, but sometimes you cant draw them outside of their sheild zone. It makes attacking a defended position too ridiculously hard, such as when you go stage 3 and have to go for the relay.
In a defensive situation this allows her to be shielding and attacking/boosting all the time no matter what. Its super not cool and no fun to play against.