ISDII Cloaking Devices and Using Them Properly

[GreyStar]

So I've been using the Thrawn tree for awhile mostly because of the diplomatic bonuses, universal supply, and having increased culture defense through a better culture spread rate. Due to playing mostly team comp games, Thrawn's just been the best for my playstyle just because of fleet buffs and ease of use.

However, the ultimate tech, is the cloaking device used on Star Destroyers and Asteriods by Pelleaon and Thrawn respectively, and is installed through level up on ISDII-class ships. So I have a few questions about the ultimate ability.

1. Is there any benefit to increasing the cloaking device beyond the first level up? With the cool down already being near instant, I don't see a good reason to not just micromanage the cloak turning off and one.

2. I've been using the cloaking device for the following hijinks with my Star Destroyers. Are any of these bad ideas?
* Stealth scouting with an ISDII
* Setting up ambushes with a group of 6 Star Destroyers laying near the edge of a system.
* Avoiding ship loss via cloak.
* Keeping the ship's firepower hidden until a good target is in range.
* Flanking.

3. Is there any thing I should be using the Cloaking Device for? Because while invisibility is a cool thing in RTSes and always leads to inevitable scouting and ambush tatics, I just struggle to figure out how to preform these things for awhile. I needed to look up Youtube guides for abusing invisibility in Warcraft 3 for example.

[Corey]

1. They're pretty much one-point abilities, you don't need to upgrade it more.
2. That basically covers how I use cloaking abilities in Sins.