Also, why do we have to wait for the salvage operation? Can't you make some sort of "upgrade" option to speed up the operation? We don't have all day you know.
There are a number of problems I have with your game, the trade system is virtually redundant after you upgrade past the first set of ships, because by then you'll have assembled a force strong enough to engage in skirmishes to get both WIP & gold (which is more efficient than just trading for gold).
Also, why do we have to wait for the battle animation to play, what about a skip button? Speaking of battles, why are they always so tedious?
There's a really simple way to beat the last boss.
Step 1: Equip yourself with lightning
Step 2: When the round starts, fly straight into the center of the boss (Don't worry, the blob will die before you do)
Step 3: Spam lightning like crazy... if the boss isn't dead... then repeat, but make sure the blob isn't moving when you do it
The easiest way to beat it is just to avoid the enemy, I chose night elves and I rushed with scouts. It worked like a charm, send scouts on the lines without men, scouts take the 2nd fastest to build but they have the fastest movement speed
 "Caribbean Admiral"){kind=icon}
 "Heavy Weapons"){kind=icon}
 "Warlords: Call to Arms"){kind=icon}