"The current consensus seems to be that the Democratic party has no plan, vision or agenda, other than being an anti-Trump party. My contention is that the anti-Trump agenda is in fact, at least partially, a positive agenda."

I'd say the anti-Trump agenda is a thoroughly positive one, considering the very real stress Trump is placing on the longstanding institutions of our democracy. But unlike Republicans, who had no legislative plan when Mitch McConnell vowed to make President Obama a one-term president the day after he was elected, I am confidant Democrats will not be quite so flat-footed and empty-handed should the tables turn next year during the midterms. And unlike Trump, they will be ready to roll out their legislative agenda on Day One, unlike Trump's "easy" solution to Obamacare and his elusive wall on the southern border, which he promised but has yet to deliver. As for a Democratic standard-bearer, one will emerge when the time comes. I have no concern about that.