Lifeline needs a cooldown on her passive just like Gibraltar has

Lifeline's passive, where she can revive knocked teammates with her drone, needs a cooldown. If you fight one from afar, down her ally, she revives them. As soon as they get up, you down them again, she just gets to pick them right back up, infinitely.

If you fight one up close, she uses the shield for cover. You get close to her, she backs off and plays cat and mouse with you until her teammate gets up. You have to kill them again, she just picks them right back up. You can destroy her drone but she can just place it right back down. You can try to finish off her teammate so she can't infinitely pick them up, but now you have to cut through their knockdown shields and you're vulnerable for her attack. It's just so cheap. It needs like a 30 second cooldown after use. It doesn't even make sense from a realistic point of view. If she used her drone to heal herself (as the tactical form), it has a cooldown. So why would her using the drone to heal a teammate and pick them up not come with a cooldown?

Gibraltar's gunshield passive has a cooldown. If your gunshield breaks, gotta let it recharge. Imagine if right after breaking his gunshield, it just came right back. That would make him so OP. I think the same is with Lifeline. She is TOO overpowered now. Can't fight one from afar and if you fight one up close, you're always forced to thirst kill or push her hard to prevent her from reviving, putting yourself in a very dangerous situation sometimes. And I'm not saying she is impossible to deal with. Obviously you can kill them and their team. They're not immortal. But in terms of what Legend on a team makes it the worst to go up against that team, she is on the top of the list. It's unbalanced.