And I disagree strongly that he would have been among the Framers after the war. He had inherent character flaws that were seen before his betrayal. He believed he was owed what he was not. While others were sacrificing, he believed he was owed rewards and rank. And while that may or may not be true, war is not fair and life is not fair. Again, I point to his inherent character flaws of greed, bitterness, and resentment. I will add to that envy. He was envious of others and he let that fester within him. These traits, even without the betrayal, would have separated him from Washington in the end and from those would create this nation as we know it.
Washington, himself, began to see his character flaws before the betrayal.
The best thing Arnold could have done is to accept his court-martial punishment for his crimes and rebuilt his reputation. However, his pride got in the way (there's another character flaw - pride. And we know that "pride cometh before the fall"). He didn't believe he deserved any punishment even though he clearly misused government property and obtained and sold property illegally.
These are not the traits of *any* General flag officer I would want in charge of men on the field (and I speak of one having served 21 years in the Army). These are traits that would have (and were) eventually exposed for what they were - betrayal of the cause, not just the men he served over. Don't forget he betrayed not just the country, but his men - the men he served over and commanded at Saratoga and in Canada. They didn't do these acts. They didn't betray America. But they certainly sacrificed. They did without and in most cases, heavily without - without pay, without supplies, without proper clothing or weapons. But they kept going.
His betrayal of his men is, in some ways, worse than his betrayal of his country.
Benedict Arnold was a traitor. There is a reason the name has become synonymous with treason - "Don't be a Benedict Arnold!" Even the British did not honor him or respect him and wished they could return him for Major John Andre. I might add that most American officers respected Andre more than Arnold. The first-hand accounts of Andre's execution talks of many a tear being shed when he put the noose around his own neck.
Arnold's character was weak and regardless of what transpired before his acts of betrayal, it was his character and the choices he made that led him to that point. No one "makes" us do something. We make those decision ourselves.
The only part of Benedict Arnold that was a hero is his left leg where he received a wound during the Battle of Saratoga. I will honor that much of him. Admittedly, he did have it within him to be a good, perhaps great, general. However, he chose his path and decided his future and his legacy. He let greed, resentment, and bitterness gain ground within his heart, soul, and mind. And it owned him in the end.
His legacy is captured in his ignominious end and the location of his mortal remains:
...in an unmarked crypt in a kindergarten classroom next to a fish tank in a church. (it was unmarked until an American paid money to put a large marker on it sometime in the last 40 years).