Yes trading capacity for resistance does make ion valid, having to have extra modules for turrets that are not covered by this benefit isn't. I think there is a disconnect between the devs and players as how many ships do the devs actually build? Balancing the game for ideal situations isn't a great approach. 3/20 may not sound like a bad thing on paper but when you try to apply it to actual ships it's not so simple. Most ships besides war cubes are not just a mess of systems. They have shapes, hull, decoration and many of them have internal structure. In a lot of cases sacrificing that many systems is not an option. There does need to be an open dialog between builders, testers and devs to establish a proper vanilla game balance. I just believe that balance has not been meet yet. Yes a bug's been fixed that made the system over powered but defense effects shouldn't be so hard to achieve that many players just wont bother trying.Well, let's see. The "most used" effects as far as I can tell are Ion and Overdrive. To have maximum efficiency for both of them on the same ship, you'd need 3/20 blocks on the ship to be those. Seeing as how Ion effectively doubles your shield, you can sacrifice some of your capacitors for Ion instead and still end up stronger at the end of the day. So, it doesn't really take up as much space as it seems.