The problem with this ability is two things:
It is overpowered IMO
It cant really be used for surveillance
Why cant it be used for surveillance, because the thing flies so low that anyone can see and shoot it down and this makes it completely useless. Something like this should be used in order to bring up enemies so ur teamates know where the opposition or even mark out mines from a distance if an operative is unable to go in there.
The main reason that it is overpowered is the fact that the ability doesnt have a cooldown. I've been in matches when people send in one UAV after another and it makes it very hard and annoying to do things such as hacking or repairing objectives.
How to fix this?
Well I suggest give the operative more control by allowing the player to make it go up and down, at least then it can be more useful in surveillance. Even better is possible give it the ability to mark mines or people enemies.
I also suggest to give this weapon a cooldown and maybe a limit to how long it can be used. This way that it cant be used in order to just thrown in there as a kamikaze every single miniute. Tbh I dont mind the damage when it explodes though I do think it should be toned down but as long that it has a cooldown and a limit then at least operatives cant just use it to blow people up everytime and like most of the other abilties can be used tatically and with a bit of thought.
So what do u guys think?
