Never nerf! Please tell me the downside of cloak then. All of the other skills have some downside or risk involved using them. Cloak is just be permanently invisible all the time. It's brainless. It's not really used for sneaking or being stealthy, it's mostly just to run at people and get an extra half second advantage in an already low TTK environment. Even standing in melee range directly behind a stationary cloak user, I can barely fucking see them.
I guess it depends on how you want the game designed. I enjoy there being a risk/reward element. A bunch of brainless stuff being spammed doesn't seem good to me. It's why I'd like vulnerability during titan executions, the ability to execute to stop nukes, more damage against cloaked pilots, etc. People should have to think about when to use cloak, not just always be cloaked.
That's one of the things I loved about stealth in Crysis mp, which is criminally underrated. You could use stealth to be difficult to spot and give you the jump on people, but if someone noticed you, you were going down.