Toning down the starting gear and items in chests is something I wanted to do with Skypirates already. There’s too many things and their placement could be optimized.
Fire charges is an interesting thought. We’d have to keep the number small, but it could be a fun secondary cannon type.
I don’t like pre-designed cannons. SethBling did a pirate ship game mode with pre-made cannons. It’s cool, but I also like building the cannons myself. Maybe we could have one pre-made cannon, but once it was taken out, you’d have to build your own.
I wish pirate ships sank… would be so cool. There was a game mode like that in Garry’s Mod. The actual physics were laggy as hell, but sinking when you lost buoyancy is pretty awesome.