Except he wouldn't and he isn't honest. I think you fail to see the world around you. Republicans control both houses. They do not like a lot of spending. Sanders plans involve a whole lot of spending. If he was president right now, he's probably be just as bad as Trump and those like you would be angry because he can't done what he promised. Even worse, Sanders inability to get anything done would allow republicans to continue controlling congress and Sanders would end up a 1 term president.
I actually agree with you here (except for the statement about him not seeing the world around him and Bernie being dishonest)
Bernie was less honest than Hillary. Dumb democrats fell for a right wing meme and now we got Trump which is exactly what they (you) wanted.
Presidential Candidate Bernie Sanders: Sheepdogging for Hillary and the Democrats in 2016
Presidential Candidate Bernie Sanders: Sheepdogging for Hillary and the Democrats in 2016 | Black Agenda Report
To me, this is an example of Bernie demonstrating integrity
I know that many of his supporters feel like he broke faith with them, but I disagree
He promised to support the dem nominee - he showed a hell of a lot more integrity than, oh, John Kas-Cuck, for example (who I supported in the primaries and for years before that - he is dead to me now)
And he had MUCH more reason to break his word here
He also advocated for what he felt was the best option for the country
While I disagree with him, I have to respect that