If you believe my "What-If" scenerio is a tad flawed, then you can go ahead and correct me.
I can see several flaws.
Another, had he decided to continue the Blitzkrieg against military bases and facilities rather than civilian populations, the British would have had a significant loss in production and defense capabilities.
First, I assume you mean in 1940. The Luftwaffe was suffering heavy losses by the time tactics were changed to night bombing, widely known as the London Blitz although London was by no means the only target. Industrial towns & factories all over Britain were continually bombed during this period & some suffered heavy damage. The Spitfire factory at Southampton was attacked more than once but by this time manufacture of vital war supplies had been dispersed.
The Luftwaffe's most effective precision bomber, the Ju 87 Stuka, was vulnerable to modern fighters & had been withdrawn from front-line service on August 18th, 1940 after suffering unsustainable losses. It never served on the Western front again. The German fighter pilots had been instructed to stick with the bombers to protect them & could no longer patrol above them keeping watch. Even though the RAF was still losing aircraft & pilots every day, large numbers of fighters were there to meet the bombers on every daylight raid. This must have been demoralising for the enemy aircrews. There were also reserve fighter squadrons based to the north & out of range of the German fighters which could have been brought into play if necessary. Unlike the Luftwaffe, the RAF's main problem in late 1940 was an acute shortage of trained fighter pilots, not aircraft.
when Hitler declared war on the US, he made himself a target. At that point, he now had to face both the Soviet Military and the US forces. HAD HE DECIDED TO NOT declare such a war, his resources and attention would have been more focused rather than divided. Thus, making it difficult for the Brits to defend themselves and Hitler would have had enough troops to halt the Soviet onslaught.
He would have then conquered Britain and begin concentrating on a larger naval force that can reach and attack the US eastern seaboard. And since the US wouldn't have defeated the Germans, they then couldn't be able to develope the two bombs. Thus continueing the the war.
After studying this period in some depth for a number of years I've come to believe that a successful invasion of Britain was highly unlikely. As I mentioned above, Goering's Luftwaffe had failed to destroy RAF Fighter Command as he'd promised. It was quite clear that air superiority was a prime requirement before any invasion would be contemplated. Even if the RAF had been defeated, Britain had the most powerful navy in the world at that time while the Kriegsmarine was confined to harbour. No German general had any experience of waterborne invasion or army/navy combined operations. The invasion fleet, if it could be called that, comprised mainly of hastily converted river barges which were totally unsuited to operation in the open sea. I've seen it stated that a single high-speed pass by a British destroyer would have been enough to swamp & sink any number of invasion barges. What the British most feared was invasion from the air but in fact Germany had nowhere near sufficient trained airborne troops or aircraft to carry them for that to be successful. Almost every field & open space in Britain was filled with anti-glider obstacles. Without total air superiority the Ju 52 transports would have been easy prey for the Hurricanes & Spitfires.
had he also decided to keep the Me262 as a fighter, the props like the mustangs would not have been able to do anything to stop them.
This is debatable. We've already discussed this at length & it had been proved that the Me 262 could be brought down by conventional fighters. Unless there were overwhelming numbers of them & sufficient experienced pilots to fly them I don't think it would have made much difference.
