To make this happen, the major obstacles are weather and landing craft. Anything else?
How cooperative was the weather in May?
To make up for fewer landing craft, can the Allies land at just 4 beaches, excluding Utah, the westernmost beach?
Without Utah, where would the 101st parachute into then?
How much worse are the percentages for D-Day being successful?
Assuming the Allies are able to hold and start to reinforce; is the benefit of an extra month of campaign weather cancelled out by the costs of a slower build up and thus a likely slower breakout from Normandy?
How cooperative was the weather in May?
To make up for fewer landing craft, can the Allies land at just 4 beaches, excluding Utah, the westernmost beach?
Without Utah, where would the 101st parachute into then?
How much worse are the percentages for D-Day being successful?
Assuming the Allies are able to hold and start to reinforce; is the benefit of an extra month of campaign weather cancelled out by the costs of a slower build up and thus a likely slower breakout from Normandy?