An Alternate History Idea

[Marcello]

The Kriegsmarine had suffered greatly in Norway, with substantial losses (Blucher, Konisberg, Karlsruhe and half of the destroyer force) or damage (Gneisenau, Scharnhorst) of surface assets, to say nothing of what had already been lost elsewhere (Graf Spee, a number of u-boats). They cannot pull off an invasion of Ireland, nor resupply a force stationed there; the u-boat force in 1940 was also pitiful small, usually less than 20 boats at sea at any given time, to close anything no matter where its bases were. Not that in principle if you had to invade the UK a move against Ireland would be wrong but the means were simply not there.
Also even if somehow the germans are teleported in Britain/Ireland/whatever if you take out Britain you have to basically redo the campaign. Just open the RND campaign layer wih the editor and tell me if anybody feels like changing all the traffic going to and from Britain. It seems to me like a lot of work to...what end exactly since you are left without much in the way of enemies to fight?