When I see that capturing one fleet might add MRLS Corvettes, and the other would add Pulse Tanks, it's hard to make a decision without an in-game tooltip telling me what those ships actually are good for. I'm sure veterans of AI War 1 (or after playing a bunch of this game) won't need it, but for me, as a new player, it feels like I'm basically just flipping a coin.
On that note, I'd kill for an in-game encyclopedia or wiki. So far, the hardest part for me is trying to internalize dozens and dozens of different units, what they're good for, and which I should be prioritizing.