Submarines are visible when it attacked another unit, it is invisible on the move or waiting but will stay invisible unless it attack, although they can't pass through units and fleets tend to shore up destroyers, well they pretty fall back in the later days.
New buildings that raise the morale of specified unit types make it a bit redundant. Why build something that benefit one type only and not all, spending a lot of time and resources to get the structure up.
Parachute units are on the works...I guess? That also count as air transport.
Railroads are already in the game called "infrastructure" as in roads, brides, and public works.
Morale and health is two seperate aspects of war. If your healthy but unwilling to war you won't fight, but if your injured but willing to fight then you keep going. Morale is not HP it's the unit effectiveness. Hp stands for how long can they still fight and morale is can they still fight. Two different things.
Unit improvement and maybe even economic improvement is a no go currently. With the new aircraft carrier and subsequent unit upgrades, stat upgrades will eat time and resources in place of unlocking new units or improve the unit alltogether, to put into context should I upgrade my tank speed? Or thank level that increase all stats at the same time?
the game does have a lot of potential, but given the simplicity of the design it's more macro and implementing anything micro will take time to consider.
