They don't really need any nerfing. In fact, they came pre-nerfed if you haven't noticed already.

1. Shimmer when you move... at all. This is not like the Halo shimmer where you shimmer more with speed. This is the kind of shimmer that is 100% visible even when you're walking at a zombie pace.

2. You are unable to switch to any weapon or module without decloaking yourself in the process.

3. You are unable to reactivate your cloak if your reserve is less than 50% full.

4. Cloaking and decloaking creates a noticeable noise and visual effect during the start and end of cloaking.

5. The shimmer makes you even more apparent in darkened areas of the map.

6. Anyone who has a careful eye can check their reticules to see if it turns red in certain spots. If it turns red, they start shooting which, even though you don't decloak, you suffer damage and die.

7. Caldari Scouts can see you even when you're cloaked and standing still because of their extremely powerful scan precision. The only other scout that can compete against the Caldari Scout is a Gallente Scout and that requires sacrificing HP for dampening.

Again, the cloak already came pre-nerfed and doesn't need any futher nerfing at all. There are just a few bugs that need to be addressed with it such as the bug which keeps you cloaked even when attacking.

uncloak on damage and an animation time for when you decloak to prevent instant switching to a weapon, maybe like a .60 second delay, like the charge on the plasma cannon, also agree that flux should drop cloak if it doesn't already