I had an idea of making a mod that adds a repair/refit ship to each faction.
The problem is after an engagement, you have damaged ships at sea, and it takes a long time to send them to a relative safe area or shore for an engy, hive or engineering station to repair them. What I'd like to do is modify existing ship or add a ship in each faction that would do this at sea, thus allowing you to repair your fleet without having to send them back and forth.
For UEF adding an engineering station to the Bulwark Shield boat makes sense, the boat doesn't attack so it never gets veterancy and healing like other ships. The downside is its still relatively weak and defenseless other than its shield. The alternative is making a T3 version of it, somewhat larger with the engineering station(s) and adding defenses like torpedo defense, tactical missile defense, AA on top of a stronger shield, the ship being commensurately more expensive.
For the other 3 factions the easiest add in is putting it on their aircraft carriers, since all 3 have T3 CVs. The drawback compared to UEF is if the T2 shield boat has the engineering stations its easier to make a number of those versus 1 carrier the plus side is carriers don't die quite as easily.
Some comparable ideas are like the T2 UEF Paladin floating drydock, essentially a T3 naval engineer/ship (can't reclaim though), or a closer approximation would be the T3 advanced air staging facilities in Black Ops (some of these have a large amount of weaponry making them somewhat OP compared to the ships). The idea being a mobile version that serves to repair ships in the battle zone.
Anyone good with making units mods interested in doing this? I'll offer a $50 prize via Paypal if you can do this and make it work (ie it doesn't bug out the game or make units not work).