If the battlegrounds ever do become larger it would be useful to allow supply transfers between airships and landships to allow the small ships to actually be able to make it across the map without running out of coal. This would also make losing because of lack of ammunition a lot rarer if you set up a good supply line( unless the enemy somehow manages to destroy said supply line).
(Quick addon) This also allows infantry to continue the fight if an airship or land ships drops ammo for them.
Air Lord, Engineering Corps
I'd like to see extended battlegrounds too, with more varied terrain and more zoom options..
Supply lines could be based off what FTD did, where resource modules were automatically assigned a group and shared resources if they were in close enough proximity to one another. (For example: a coal supply line can connect all the coal stores on every ship within (X)distance and allow them to share)
Yeah, but would they have to be buildings, or could you get a mobile refinery that could travel with your troops?
Making it building only would give them a unique block type like other constructables, but mobile refineries sound really useful for the campaign.
They both seem like good ideas but cutting out mobile resupply stations is a bad idea in my opinion.