Biggest problem with galleons right now is it only takes one hwacha or one heavy carronade on a goldfish with half-decent positioning to effectively counter one. Or any carronade or disabling build for that matter.
I second this, and put forward the addition of lumber fish as an effective counter. I would like to say rather than the medium guns being underpowered (excluding Hflak... unless the hull is down
But I'm fine with that) that it is the galleon and spire that are countered too easily by anything that can pop a balloon. The fact that three out of four medium guns make a respectable goldfish build means I don't think they need any kind off buff or help
I'm also fine with the medium guns being easy to disable though - if you don't want your guns down you should kill or disable the other ship first.