I'm disappointed at how boring the fleet booster effects are. They're just multipliers to basic stats; damage, health, shields, it's so boring I don't even want to use them. I expected weird stuff like the old raider, effects that could really change how an entire fleet functions. Every ship moves at X speed if they aren't faster than X like the old raider, or every ship gets cloaking or vampirism or zombification or metabolize, or a flat HP/shield boost so swarmers get really tanky, or fleet-wide shield penetration, just weird effects that make you think about how best to use them. And it would probably be hard to balance, but it would be way more interesting and fun than 1.5x damage or 1.5 hull or even, woah, 1.5x damage and 1.5x hull at the same time!
I hope that this sort of thing is what you already have planned for the future and these effects are basically placeholders for the weird, cool, hard-to-balance effects that you're currently playtesting. The entire rest of the combat system is so intricate, with so many different effects and ship stats and niche interactions that I can't imagine you're satisfied with how little thought the fleet booster wings take to use.