Are you convinced that the axis automatically win after UK falls?
I still say its a race to get city 5 before the U.S. stages too much in Gibraltar. I argue that taking UK is the same as taking India in Pacific1940. Its still up to the U.S. to win or lose the game. If its a close game, then no, taking UK does not break the game.
If you always win as the axis after a UK fall, then yes it would be broken. But I believe the game still has to be played out. Here is why:
Lets say you take UK with 10 units….Lets say you maintain 60 IPCs or more as Germany. How do you take Russia, with 20 land units used in UK, we agree you lost 10 of them or 30 IPCs in value. You captured around 30 IPCs. The axis are now up 8 IPCs and allies down 28 IPCs. However, you are not in position to engage Russia. They should be stacked in E. Poland waiting to hit Slovakia turn 4 with 32+units. You will have 92 (52+30captured+10NOs) to spend on round4. You can place potentially 3 units in Germany, 10 in W.Germany, 10 in France, and 10 units in London(99 IPCs if you built infantry at each). Now that you have UK, you will have to build there to hold it in later rounds. Which factories do you place your 92 IPCs of units at? Unless you had Italy moving to Germany from round1, you may place 92 dollars in units, only to lose your capital for 1 round before you liberate it. Lets say you had enough to defend Germany, then the game looks like this:
Lets agree its the end of round 4, the allies have 67+28=95+2R.inf and the axis have 52+15=67+20NOs=87(assumes 2 Italy NOs). (Without Egypt axis will have 82)
You are not only being outproduced, but what you do produce has to engage Russia and protect 4 major factory sites: Rome,W.Germany,N. Italy ,and London. You also have to protect 4 potential major factory sites: Norway,Sweden,Belgium, and S. France. Thats not mentioning the minor factory in Normandy or the potential site at Denmark. Sounds like a game still.
We can assume you will eventually take Egypt with Italy as UK can not produce.
It cost the US 14 IPCs to place 1 art and 1 inf in Gibraltar. It costs the axis 21 IPCs to place 1 inf and 1 art. in 3 strategic zones(France,Rome, and Finland) able to counterattack an allied landing in Continental Europe. Add 6 more IPCs to hold London. Therefor, 14 US IPCs require 21 (if you don’t care to hold London) or 27 axis IPCs to counter. Does it still look like the axis have it won?