If you are saying that the Allies are landing Western Europe heavily, even reinforcing with fighters when Germany can reliably kill their beachhead, then it’s probably a bad idea unless the Allies are so far behind they need Germany to get diced. I don’t go heavily into Western Europe unless I can hold it for the rest of the game or I can hold it for a turn and have enough transports that I can pull out most of my units before Germany overwhelms them.
