1. He basically pulled a Clinton-style triangulation, allowing for some socialism in order to take the edge off the socialists. This was the wrong decision, as the economy was already starting to recover, while we are still stuck with his socialism some 70 years later.
Also FDR refused to act when Hoover urged him to during the handover, causing more banks to fail and the banking issue to spread.
Further, the Social Security act was in itself dishonest - the actuarial tables, from the start, showed that only 1 in 4 Americans would make it to 65, so basically FDR was taking from the shorter-lived to give to the longer-lived. Also, the original SS was changed greatly in just a few years to encompass much more socialism.
2. "optimism and hope" - FDR was an accomplished liar.
Things you don't take into account: the NRA (National Recovery Act), which was so unconstitutional that even a hand-picked panel of his friends was scathing in their review of it; Communist infiltration to the highest levels of the US government; his attacking of personal property in seizing gold.
Post WWII (as you call it):
1 and 2 : Lindbergh, whatever his other beliefs, may well have been correct in urging isolationism so that Germany and Russia would have ground each other to pieces. Instead, Germany was kept down, allowing Russia to gobble up most of Eastern Europe (remember Yalta) and throwing hundreds of millions into 50 plus years of Communist slavery.
I could go on, but if you can't answer the above, or they don't change your position, then adding to the list above is pointless.
George Bush gets creamed for his reaction to Andy Card informing him of the 9/11 attacks. If only there was a camera in the Oval Office to show FDR continuing to eat his lunch with Harry Hopkins after being informed of the attack on Pearl Harbor.
Second, had we remained with our heads in the sand, the war in Europe would have been won by Hitler, and we would have faced an enemy light-years ahead in technology, with ICBMs that would have soon been improved to reach our coast - and we would not have had the A-bomb either to serve as a deterrent.
Don't take this personally, but your post displays an amazing shallowness in your knowledge of 20th century history.