Putting on my future-telling hat, I say Clinton wins this Presidential election, but only serves one term, and then loses in 2020 to a Republican.
No matter what the Republicans do, they have lost the 2016 election. They are just too disheveled to make a compelling case to the ~23% of the American public that votes. Bernie's supporters - bummed by still engaged - vote for Clinton this time, so she wins.
But Hillary does what Hillary does, which alienates all the idealistic Bernie supporters that voted for her and also disgusts her core base who hoped she'd be better than that, so she resoundingly loses the 2020 election to a New Republican from the reconstituted moderate republican base (Christine Whitman, maybe?).
In the interim, though, Democrats empowered by Bernie's successful messaging finally make in-roads into local political races, and wind up balancing the House and the Senate.
So the Republican president elected in 2020 is forced to a more centrist position to work with the balanced House and Senate, and has a largely mediocre first term, but is re-elected simply because the Republicans are better organized than the Democrats. (See Bush Jr.)
Since the Southern Strategy/Karl Rove Republicans have all died at this point, a moderate R party wins four consecutive elections, returning to their base "conservative" principles ... which are, oddly enough, the principles that Bernie was spouting 30 years ago. Because, when you look at it, the actual "conservative" stance is spending money on proven successful programs and providing basic services for all Americans, as well as leveraging what has always made America great, which is the promise of the American Dream that so many come here to reach for. (AKA - Scrape off the top 1% of every other country's best talent, get them into an Ivy League school, and then make sure they get into producing amazing new innovations that the US can give to the world.)
(In fact, this is basically what Bill Clinton did, politically. He co-opted all the moderate Republican programs, renamed them, spun the story around, and knocked the R's off their balance. It took them until Mitt Romney to find their feet again.)
So yeah. I think Bernie has had a big effect on the national political conversation... we just aren't going to see fruit from those seeds until I am an old man.