Do you have any go-to upgrades, kills and ships? Personally I find that orks are extremely hard to play without Traktor kannon (lvl 10 skill). It is pretty much the only thing that gives you a chance of catching kiting fleets like chaos or any eldar flavor. Naturally, stasis bomb is also great for catching opponents... And they synergise so disgustingly well (throw stasis bomb, traktor kannon them as soon as they try to boost out), that I can't justify picking anything else, ever, unless you are underleveled or want some variety. Orky Nova cannon is not very good and Shokk Attack is just underwhelming with only 4 troop damage.
I find that hangars on our ships are kinda overpriced. Fighters-bombers seem to lack turret stripping capabilities, and compared to other races it is easy to flush 3 charges since you risk both fighters and bombers whenever you make use of them. Maybe you wanted to send fighters-bombers in just to deal a chunk of damage and retreat, but they'll stick around and allow other enemy ships to close in and shoot them down just because their target has some turrets. Assault boats are extremely flimsy and even when opponent has no protection against fighters-bombers I rarely find any enemy ships have that 0 turrets left (unless my partner is also carrier with proper fighters), so it very hard to make use of them. As a result I pretty much only use fighters bombers as protection for my own ships, and they tend to die against dedicated carrier fleets even with turret support.
As for ugrades, there are a lot of trap options. Like restoring 10% of hull when hulking (Does not happen often enough throughout the match to make it worthwhile and ork ships don't die from inability to absorb damage, they usually die from mutiny or receiving an engine crit), or extending range on guns for flagship (without providing any accuracy? no thanks).
In my opinion only considerable upgrades are Anuver Deck(orks need to be in Lock On! to hit anything, so essential for shooty fleet), Waagh Songs(greatly helps with Morale issues orks have, keeping your ships function until the very end). Out of viable sub-faction upgrades there are only Evil sunz (proper boost to Red Button) and Blood axes (if you manage to get your stealthed blob of death close enough without getting scanned, then it is usually an instawin against non-eldar faction).
I've tried Zzap fleet (upgrades that pass through shields and holos 50% of the time and slow down enemy for 2 seconds) and I found it kinda boring to play. Can't say if it was competetive, since I've switched out of boredom, but it seemed viable at least.