Just had this thought while driving this morning. What would a game of Armada be like if upgrade cards were hidden (turned face down) until they were used?
This wouldn't work on all upgrades, as some like Rapid Launch Bays require actions at the start of the game. And others, like Early Warning System wouldn't be too much of a surprise as you'd want to use it at the start of a round.
But look at things like Ordnance cards. Does that Gladiator have APTs, ACMs, or External Racks? Or Fleet Support. Is that flotilla sneaking it's way closer because it has Slicer Tools or is it there to support that group of bombers?
Without having given it too much thought, it seems like a way to add a bit of surprise to the game, even if most of the upgrades are flipped up during the first round.