Put it on Skyline though, where there's a near constant battle for the rooftop, and you have a very different proposition. Likewise, give Statue or Evac Zone an Orbital Strike and as there's little deep vertical cover, it'd be much more welcome.
The Nano Disruptor isn't bad in theory, but it just needs the right maps.
Also, I feel it needs a general buff regardless in range which can be mitigated by making it run out of energy after a certain period. Right now it's very weak, but sticks around for so long that nobody gets to use a second one. Often i've earnt another Disruptor in a match but can't call it in because my first (now tactically useless) one is still active 5 minutes later, despite the enemy now being holed up elsewhere and the flow of battle changed.
Give it a minute duration, 1.5x the range, and put it on better maps and then it'll be a worthwhile streak.