I happen to be a Brees/McCoy owner in a PPR and finished with a 5-8 record, so rebuilding is one option (while building around them for the next 2-3 years is another).
That said, I am not that keen this deal.
To begin with, I wouldn't touch Bortles - thought he looked awful this year and while I would consider acquiring him as a cheap backup, I wouldn't want to invest in him as my QB of the future.
I also own Coleman in the same league and was really nervous using him even as a flex starter as his production seemed feast-or-famine. I not certain he will ever be the featured back even if Freeman leaves and could be mired for years in a RBBC.
Murray turns 29 this year and finished with a torn plantar plate that may require surgery (or may be OK with rest). In any event, I could see Henry displacing him in a year or two, but that in itself would not be enough to make this trade attractive to me.
For myself, I will consider offers for a Brees/McCoy package, but am in no hurry to move them, as if you have two solid players on your starting roster like this, it only takes a few more pieces to make a team competitive enough to make the playoffs and once you do that anything can happen (won a championship this year with a mediocre #6 seed 7-6 team that got lucky in weeks 14-16).