Eisenhower and Patton Killed in Tank Accident

Apparently, while Eisenhower and Patton were at Fort Levenworth in Kansas experimenting with tank development they had a bare miss accident. A tow cable on a tank snapped and was inches away from more or less taking off their heads.

Without Eisenhower and Patton how would Armored warefare develop? Who would take their places? How would this change World War 2 and Eisenhower's presidency era?
 
I imagine MacArthur might get Eisenhower's job and maybe Bradly replaces Patton. But I could be wrong. Still I wonder would MacArthur want to invade France in 43 like Eisenhower or would he agree with Churchill's soft underbelly of Europe strategy.
 
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