@Schulz OK so here is the thing about Russia in WWI and why they are hard to simulate. Russia had a huge manpower pool to draw from but was consistently running out of equipment. So you would get things like 2 soldiers sharing one rifle, or an artillery battery that can only fire for a few minutes.

The problem is when you look up something like how many soldiers did Russia have in WWI you will get an impressive number, but what that’s not telling you is how many of them actually have enough weapons or ammunition to fight. It’s like owning 10 cars but only having enough gas for 3, then writing down that you have 10 cars available for use. Technically true but not helpful

The Central Powers should punish the Entente if it keeps so many ships parked in these zones just to hunt a single possible German submarine.

I think it's good that this gives the US more options than just sending troops to France.

@Schulz
If there are 4 spawn points, then if I was the Entente, I would swamp each spawn point and shut it down. I would have way more spawn points and not make it obvious that it was a spawn point.

Im not a fan of Convoy Zones, they are artifiical. I prefer each SZ is worth 1pu and has ownership flags. But I would say that, as 1941 GCD has this.

Let's make 1 round = 4 months then.

And here's the new planned sea zones.

What I liked the most is that the Entente can't block the Western Mediterranean anymore by parking in a single sea zone.

Balancing Russia will be tough. Some ideas:

They will get a malus to their income, and that malus gets bigger each round. For example, they get -2 IPC in round 1, -4 in round 2, -6 in round 3, etc. I'm normally not a fan of too many rules, but I can't see how to make it work right now other than something like this. Maybe giving them a very large army but a very low income would balance them.

Another idea is making the rectangle zones German submarine spawn points. Each rectangle will have something like a 25% chance to spawn a submarine each round. With convoy zones, the Atlantic would be more interesting.