Which ship upgrades do you recommend getting first?
I will preface this with depending on diffculty/playstyle your milage will vary, but some upgrades are indeed just amazing compared to others, all 3 of the hanger bay are just leagues better then the bonuses you get elsewhere, especially the lvl 2 and 3, and with Clusterbomb and Airstrike being so useful early/midgame, getting lvl 2 of that first would be my solid recommend, you switch Airstrike out for 500KG bomb on suicide mission + so there usefully all the way through.
Outside the final level 3 the orbital upgrades are just not worth it. The most useful are the precision strike you start with and the shrapnel strike you can unlock, the issue both are inferior versions of the bombing run and cluster bomb of the aircraft. Endgame people take the railgun strike and orbital laser (which is shared across the whole team and can only be used 3 times per mission) so the 10% cooldown will be useful at lvl 3, but the other upgrades prior to the final one are essentially useless. So endgame you see alot of one person taking orbital laser and orbital railgun, with everyone else taking orbital railgun and a mix of 500kg or clusterbomb and the other two callins a mix of equipment/turrets.
I would say the lvl 1 upgrades from the bottom 2 robotics are nice, but the really useful ones at lvl 2 and 3 require uranium, so you can't get the good stuff until endgame.
I would say the lvl 2 coms stuff is good, the radar range is super useful once you get the hang of using the map during missions, the additional range let's you avoid patrols you normally wouldn't see.
The lvl 1 terminal upgrade so your heavy weapon drops have full ammo on pickup will never not be useful either.
This is of course what I feel is "meta" So I would naturally push back and say, just get and use what you think is cool, it's your game after all.