Yes. The Clintons would be well served by a primary rather than a coronation. Just see how well the Gore coronation worked for him, compared to the Bush v. McCain fight? Bush would have probably lost in 2000 if not for the primary fight, which helped sharpen his campaign and endear him more strongly to the conservative base.
Will they get the primary fight? Probably not.
Gore didn't get a coronation, he got challenged by Bill Bradley. A Bradley-esque performance is probably the best performance a Dem could hope for against Hillary, provided it comes down to a one on one battle.
Also, it didn't work out too bad for him considering he was supposed to lose in a landslide and almost won.
It turned into a coronation in January 2000, pretty soon after New Hampshire. Bill Bradley didn't win a single state and all the attention turned to McCain v. Bush. I would say that it was a coronation or very close to it ...
Gore arguably would have won the election had he been sharpened by a more intense battle between him and Bradley. Bradley could have exploited the same vulnerabilities that George W. Bush later did and Gore could have aired out these issues. I paid attention to the 2000 election and it never seemed that Bradley gained enough traction to ever make these vulnerabilities a serious issue that resonated enough with voters to allow the Gore campaign to fashion a credible way to respond to these issues.
