One much-needed feature is a mobile recharger. You equip it, and it increases your regen (both shield and energy) by a ton (maybe +500%, or something), changes your top speed to 0, lowers your resists greatly (so that you don't have a hope of being able to outregen something shooting you), gives -100% damage, ect. This is so you don't have to spend 20 minutes recharging between fights, and has been asked for since capital ships have existed.

Sounds quite nice, as long as its small size, so other classes can use it than just FCs and Gunners, can I also suggest that its a hard bonus, and not percentage, as my dreadnought does 0.93 recurring RPS, 500% of that isn't much, but +1000 RPS is. You follow?

Another epic feature would be auto turrets. I think an admin was actually working on these before, but they either gave up or were assigned to something else. You equip these, and they act somewhat like a drone that attaches to your hull. It will shoot at enemies, but give priority to missiles and fighters. An ethereal weapon would be nice for them, so they can actually hit the missiles. They would draw directly off of your energybank, and possibly your shields as well. They could have lower resists than you, making them likely to be targeted in PvP to avoid the massive cap ship resists.

That sounds, looks, and sounds again, very very familiar... What was it.... I can't put my finger on it... Oh yes, that's it... One of Churchill's suggestions... Which I also believe is in Eve, considering I have seen pictures of such thing when I created my 14 day trial, anyway, for a man who hates Churchill, and his suggestions, and even more the ones he ripped from Eve... You don't mind suggesting it yourself do you? XD
Either way, this sounds cool. XD

I'm not sure if this is even possible with the way the game is coded, but some kind of gravity item would be great. It would work like a tractor, but pull in every enemy within range. Unlike a tractor, it would get stronger the closer to the capital ship you are. A push tractor version would also be nice. The capital ship itself would not be moved at all by these, in fact it would make sense for this to give the capital ship a -100% speed debuff while in use, along with other things to balance it (maybe a resist decrease, or something?). Massive elec usage, 500/second or more. It would equip in the aura slot.
Like a Density generator? Sounds cool for some ubers... Pulls in the Shield Monkies and pushes out the Berserkers... Heheh. XD

I saw the Paxian Battle Frigate stats right of XML a few months ago, it was like a Dread+ with Shield bank and Energy bank bonus.

100% less shield bonus and 100% more energy bonus iirc