I understand that, but I still don't see much good coming out of it, to be honest. In pub matches, it'd still be the main brawler unless its turning was practically removed. They've tried nerfing its turning speed, acceleration, and vertical acceleration before while also making it one of the fastest ships, and none of it made it more specialized. It continued to be used as an all-out brawler. At a competitive level (not that that's a huge priority for Muse), it'd likely just get replaced entirely by the Junker.
Actually, what you said highlights a very big problem with the game right now.
Killing outright is better than just about anything else. That's the reason why gat/mortar, the Pyra, the Junker, and the Galleon are so good, whereas Goldfishes, carronade-flamer combos, and specialized ramming builds aren't. Any ship that can bring a piercing-explosive combo and has the stats to back it up will be effective. The Spire can bring piercing-explosive, but it'll die the moment a fly lands on it. On the other hand, the Junker can bring piercing-explosive and can take hits well. The Goldfish can survive longer than most other ships, but it's held back by the fact that it can only reliably get one gun on a target at any given time.
So that's something to think about: if we want more diversity in this game, maybe it's time to look at bringing back disablers and support ships.