Hugh, here are three reasons why SCOTUS as an issue falls flat with me:
1. John Roberts - Obamacare
2. David Souter - Kelo
3. Anthony Kennedy - too many too mention
Trump changes his views depending on what day it is. Sorry, just don't buy it anymore.
In fairness to Kennedy, he was only a compromise choice after the Senate refused to accept Bork—and I would prefer the likes of Kennedy, despite his open catering to the alphabet soup lobby, to the likes of Roberts, who is a corporatist to the core and who is hesitant to change the status quo even if it is beyond the scope of what our government is supposed to be.
Trump, who is a corporatist at his own core because that's what made him rich, would nominate people like Roberts.
Clinton, of course, would nominate more Ruth Bader Ginsburgs.
(Johnson, in the unlikely event he did get the post, would likely nominate the likes of Kennedy.)
There isn't one person in this year's field who would nominate people like Scalia (that is, unless you think Darrell Castle has a legitimate chance of winning); I'm not saying this just because I want to see a court full of Scalias, but there was a delicate balance for a good 20-plus years on the court, one that is now ever so slightly in the left's favor and will move even moreso if a staunch conservative isn't put on there to offset the rest of the court.
It's not going to be pretty.