Let me rephrase the question, because I simply can’t figure out the details of shield mechanics.
Say you have 2 shield generators of the same type, with a shield strength of 100 and a shield resistance of 25, and a stacking effectiveness of 80%. Most things bounce off when they hit these shields. As far as I can tell, when the shields do take damage, it’s randomly applied to one of the two generators. Once the shield bar is depleted from one generator, the shield never recharges and is basically a useless hunk of metal (other than a few extra HP).
The two stacked generators have a total “shield HP” of 180 points. The resistance doesn’t stack, I know this, but, if the first If one shield drops, you’ll still have 25 shield resistance until the second generator also fails. Also, the 80% restriction vanishes (I assume) once the first shield generator fails, so theoretically, if all the damage goes to one generator first, you’ve essentially got a brand new, 100 HP shield behind it as soon as it falls. This is where I start getting confused on shield mechanics; does this in fact happen, or is the 80% effectiveness penalty permanent based on the number of modules installed, rather than the number of active “shield bars”?
Why I think that shield capacitors are a poor investment (ignoring concerns like crew and power requirements) is that, if the main shield generator fails first, you now have a shield “HP bar” which has zero resistance and takes damage from everything that hits it, meaning it will vanish pretty much instantly. Unless the capacitor takes on the resistance value of its concurrent shield generator permanently, in which case it’s a flat increase to the HP bar of the shield. If that’s the case it becomes a no-brainer that they’re a far better investment than a second shield generator. But if that’s the case, what happens if you have two shield generators of different resistance values and a capacitor installed? Does the capacitor switch resistance values to the next one when the first fails?
So how do the shield stacking mechanics actually work?