[Fidd]

1. Player position of "convoy commander" onboard a destroyer. Able to set the convoy on any given course, able to set a base course with zig-zags plus or minus up to 45 degrees. Able to vector all or some escorts to a particular area, or to a given u-boat target.

2. Players able to jump into an AI escort on the fly, or into unmanned positions within a player operated escort. Players able to set the course of their own escort in the absence of order from the convoy commander.

3. Limited depth-charge magazines, presenting the player with the need for some economy when dropping DC's.

4. Open bridges with audible asdic repeater whilst on bridge.

5. Use of British and/or Canadian, and US voices, with procedures appropriate to each navy.

6. Randomly applied "Hunter Killer" - essentially a much stronger compliment of destroyers to some games, allowing for more players operating more ships.

7. A better damage-model for U-boats allowing repairs to mitigate flooding rates, electrical or motor problems as a consequence of DC attacks, essentially giving the crewing players much more to do whilst under, and after, DC attacks, assuming they survive. Review of Physics-model, so abrupt changes of position vertically, especially by DC's exploding beneath the u-boat. Difficulties in holding vertical position whilst under DC attack, presenting the U-boat crew with the need to economise on compressed air whilst also having to make crude changes to bouyancy.

8. Rolling, yawing and pitching of escorts, to make, according the sea-state, difficulty in prosecuting accurate DC attack.

EDIT: I'll add to these over time.