Weapon upgrading:
At a certain rank, you unlock a set of missions, with escalating requirements each time you finish them. For example, Mission A may require you to have 50 PvP kills the first time, 100 Kills the next, 200 the one after, etc.

3 weapons missions, end of each has a different reward:
Stable Overcharging: Requires: PvP kills. Reward: +20% to PvP attack for 1 Researched weapon - becomes a Overcharged .........
Weapon Surge testing: Requires: NPC kills. Reward: +20% to NPC attack for 1 Researched weapon - becomes a Surging .........
Weapon Blast Theory: Requires: A mix of both (eg 25 PvP and 100 NPC kills) Reward: +15% to attack VS hull for 1 Researched weapon - becomes a Blasting .........

You can only use 1 upgrade per weapon. Selling or breaking a weapon removes the upgrade. You can only use these on researched weapons. Upkeep increases by 10%.

eg.
I have 8X heavy nulls (300 attack each). I could have 4 Overcharged, 2 surging and 2 blasting nulls. This will give me +240 PvP attack, +120 NPC attack and +90 attack VS ANY hull.

A little overpowered me thinks, but +1

They are only example stat boosts - a 10-20% boost to 1 weapon under a certain circumstance isn't that much, but it'd make for more unique ships.

if this were implemented, i would like to be able to repair modules at any time, instead of just when they break. that way i can guarentee that i wont accidently lose my bonuses.

but, i do really like this idea. alot.

not a bad idea +1 for the idea but there should be a limit to how many can be +'d up or someone might do all 8 pvp which at higher levels can be a pretty significant upgrade

That's a 683 PvP attack boost for 8 heavy Quasis.
And 820M more upkeep.

Also, the requirements go up each time - for PvP, it's PvP kills. eg. 100, 200, 300, 400, 500, 600, 700, 800 kills at each milestone. Sell/break one, and it's another 100 kills to recharge it. I'd say it's pretty difficult as it is.

Repairing anytime would be good. But equally, perhaps it'd make people think more about how they defend themselves from hackers, and manage their decks and cargo differently.