[XenonSurf]

I agree with most of your suggestions. I hope the devs will read this at some point.

Here some adds:

Tactical map:
For the map, and the tactical mini-map especially, what I suggest is the ability to toggle ON / OFF the trailing lines.
Reason: When evading torpedos, you want to see clearly the threats and all those trailing lines make it difficult.
Ability to plot markers and lines would be great so you can decide for an interception when the contacts are gone.

Strategic map:
Is nicely done, but for navigation I suggest to add the capability to plot waypoints and replicate the navigation helm to display and change the boat's speed and depth. Still you can manually overwrite it with the current method of navigation.
More important: Ability to pause the map while seeing everything (time freeze) and plan ahead.
Ability to enter 3D world at any time without combat engagement (for training purposes)

Single mission:
I have made it myself, but add a training mission that allows to chose ALL subs in the game against exercice targets.

General campaign:
I play a mod, but allow to chose all sides to play (RUS & US).

Thank you for a nice game !