As a Galleon, do people expect a certain offensive role? i.e. do most people prefer a good Galleon to fight up close with mortars? Or is going with a heavy long range set a valid preference?
Some people like running their Galleons entirely up close, but often you'll get more out of the ship if you bring a long range side. The Galleon functions best when it can focus a target down at mid-long range.
And for Galleon's starboard, is it more of a secondary resort? Having only heavy weapons on that side seems unable to get past armor...
The carronade-hwacha combo is actually amazingly good at both disabling and killing ships up close. The carronade deals a pretty sizeable amount of damage to the armour, not to mention that you can get ships on the ground with it.
Oh, and an irrelevant question. How's the Mercury Field Gun? I ran with Pyramidion's C preset in novice games, which has that and a flak as the fore guns, but it didn't feel too exceptional. Is it just for poking?
The mercury is a very strong gun if you use it right. At mid-range it's a bit clunky and gets outclassed by the Hades as an armour stripper, and up close its turning radius is a huge headache. At long ranges, however, it's fantastic for getting armour down quickly while also being extremely easy to hit with. In addition it disables engines and guns in a single hit, which is especially helpful for going up against ships with heavy guns (mostly Galleons) at long range.