My guess is that Turpel-Lafond will be chosen.  "Social justice "+ indigenous + female + "outspoken" would be the Liberals' idea of a dream candidate.  

That's not a knock against her formidable intellectual qualifications - it's just a recognition that her world view fits in with the Liberals - and her demographic is what they have in mind.

Lafond's name was also mentioned a couple years ago when the Liberals were considering dropping the traditional "Atlantic Canada" seat on the Supreme Court.

It will be good for a few weeks of glowing press coverage for Trudeau, at least.  Only question will be if she's elevated to Chief Justice right away or Rosie Abella will be appointed as longest serving justice and as having a generally liberal viewpoint as well. 

(It's worth remembering Pierre Trudeau broke the then tradition of appointing the longest serving justice as Chief Justice, dinging the highly qualified Justices Martland and Ritchie)