I can not really say that i tested combat stealth ship on a vanilla server.
However due to custom config changes (increased power generation for example) on the server i played it was possible to perma cloak smaller ships.
We are talking about 30 block long and wide craft but they were able to have a nice design, full hull and some interior as well.
Those small craft are not good at scratching the hull of a capital ship, but proved to be quite good in taking out turrets up to the same size of the stealth ship, bigger turrets proved to be more difficult to damage.
The used attack pattern was fly in cloaked, fire missiles at extreme close range to prevent anti missile turrets from shooting down the missiles and instantly cloak again. The ship was visible (but still radar jammed) for one to two seconds.
((the plan was to take out the missile defence turrets to make way for the torpedo boats))
How ever one thing became noticeable.
Currently there is no counter against stealth.
(Yes you can still detect that the stealth ship is in the same sector as you but you need to be actively looking for it and have no way of determine where exactly it is.)
Your automatic turrets wont fire at it, manual operated turrets would need to be looking in the right direction to even have a remote chance to hit it, heat seeking missiles are to random and will most likely hit your own turrets than anything else. Hoping for a luckshot by spraying the area around your ship is no save way either.
So its a bit frustrating to be under attack by those ships, as you can not do anything about it.
So i am all for the option to redesign stealth and cloaking.
Maybe with the option that like in Star Trek the cloaked ship does not have shields or even a reduced visibility. It should have some drawback to make it balanced.
(Think a bit of a submarine here where you have to use a periscope to look whats going on on the surface)
But it would be a good thing if the scanner would help you to pick them up or mark them for a short while when they are close to you so you get a chance to be able to counter the stealth to be able to fight back somehow. (maybe a setting in the scanner to scan for Cloaked ships, so you still need to be actively searching for the cloaked ship)
If it is getting changed like the jump drive or scanner (cloak computer and cloaker blocks). it could be a good idea to have it for example charge before you use it. so the enemy has a chance to hit you before you recloak, or if the scanner in one ship has more blocks than the cloaker blocks in the other ship, the scanning ship can detect the other on a larger distance , or you need more cloaker blocks per mass of your ship to counter the scanner.
Something like that to balance it.
(a bit off topic: but i also think we need something to counter the enemies jump drive, to prevent them from escaping)