Wouldnt it be interesting to add a prototype style weapon to the gunboat that worked for a week and once per attack - would add an interesting dynamic to the attacking portion of the game. Could be destructive or tacticul abilities. Would work much like the prototype defences.
- railgun (high damage single shot to one defence, no area effect)
- Heat Ray (clears linear path in mines but does no damage to buildings)
- Decoy Gun (launches fake critters/squad that do no damage but attract defences)
- Squad cannon (launches one landing craft worth of troops into enemy lines instead of the beach, less land on the beach, not for heroes)
Just ideas of course. What others can people think of?