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After playing this for four days uninterrupted (as Gen. Doolittle) and virtually starving myself, after playing strategy games since 1980 I think the following additions should be made and are ESSENTIAL:

1. Bering Strait should be passable. This is essential for the USSR and US to be able to move their fleets back and forth between arctic and pacific. Even if ice is the reason for it being impassable to surface ships, submarines should be able to get through. The area west of Greenland should be made passable as well (I believe the Northwest Passage). Ideally the area between Greenland and Iceland as well as Straits of Gibraltar should get the same treatment. **Update since first posting: Bering is "passable", but with a ton of work. The AI should know how to get through them. Like it does south of South America.**

2. There should be a setting in the advanced option which would allow the host to determine the effectiveness of anti missile missiles. This would set the ability to shoot down nukes to high, medium, low, or extremely low effectivness. This would give a much greater variability in the styles of play and would allow the game to better reflect real life in the extremely low effectiveness mode. Negotiation and preparation are totally different with "mutually assured destruction."

3. Give Host a way to set anti sub effectivness "speed." In my opinion, as it is, subs are extremely vulnerable to being sunk by planes as soon as they surface--even planes stilll sitting on the tarmac somewhere. In the real world subs don't even have to surface! Taking them out could be one or two steps more difficult.

Oh yes... and ADD MIAMI to the US cities. It only has like 6 million people! But perhaps Thunder Bay, Canada is more important to have. Who knows.
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In addition to the essential changes, I would like to see the following additions:

1. Host can choose from 3 world map types...
a. "Standard", with regions as is.
b. "Cold War", with regions better reflecting alliance structures of the Cold War. 1) USA and NATO on same team AND have Israel AND Australia, Japan, South Korea. 2) USSR and CUBA. 3) China. 4) India. 5) Maybe Western Europe is its own team (in this case Israel goes to US), but the alliance with US cannot be broken (already available as a hosting option). Would have "historical" and "free" set ups.
c. 2010. That is 1) USA, Canada, Israel, Japan, South Korea. 2) EU, French Guyana, and Australia. 3) Russia. 4) China. 5) India. 6) Maybe Brazil...Maybe certain Islamic states as computer player with limited stocks. dunno. Would have "historical" and free set ups.

2. I would LIKE to see ABM (anti ballistic missile sites) as separate units. Or at least allow the host to set them as separate units. There is no real reason to make silos also be anti ballistic missile systems.
If maps get crowded in any of these situations make the "footprints" of units a little smaller so, say India could place its units inside of its borders.

3. Make Defcon 5 and 4 last longer. Would allow a LITTLE more time for negotiation while placing units. If ABM systems were included this would be important. Placement is heavily alliance dependent.

4. Polar Route redo. I like the whole polar routes (curves on the map projection we are using.) But it is only applied to ICBMs in this game. The curved trajectories for the bomber launched nukes make no sense. The smaller the distance from launch to target the less evident the curve would be. Hence, Nukes from bombers should travel almost in a straight line. Not these weird curves in random directions. For some reason bombers don't fly on curved paths when flying from say London to New York either. They should. Same for fighters. In my humble opinion the whole game should be played on a vector 3D, fully rotatable globe anyway. This would allow for all routes to be correct. It also wouldn't force nukes from Asia to fly through the North American missile defense systems just to get to South America. In real life they would fly over the pacific. Way out into space. And then back down in South America. All this could be accurately done on a 3D globe. But that... is another story. And I have a feeling we won't be seeing that anytime soon.