Recon drone needs a time limit/range decrease

The abundant use of the recon drones is too much. It's basically wallhacks for the team. You get a few recons to sit back and fly their drones over the enemy team to spot and blow up defensive implements. It's ridiculous. You spend half of your time looking up looking for the drone and then you get shot by the enemy who is using its spotting to know exactly where you are. 

There needs to be a time limit and severe range decrease on it's use.