A few things i have to say on the topic of stealth ships:
1. A ship that can cloak, jam, fight and fly all at the same time would be ridiculously over powered, imagine being able to engage with another ship, then cloak and jam, fly around behind the ship your fighting, uncloak, shoot at it until the ship turns around, then cloak and go behind it again. There would simply be no stopping a ship with this kind of system.
2. The whole stealth system is completely fine as it is, most of the people complaining about how difficult it is are noobs and want to leap straight into the advanced stuff within minutes of first playing.
3. Theres not a lot of point in cloaking, unless you want to spy on someone elses base, but most of the fighting that happens on normal servers is Pirate VS Players (the exception being PvP, but thats normally advanced players), and pirate stations are easy to predict.
4. Jamming is much better in combat, because it uses less power, you can still shoot, and as long as you stay out of the other ships field of view, your still un-detectable.