Frankly, I'm not seeing a huge upside to this pairing. As others have noted, both Radford and James are getting a little long in the tooth, so what is the longterm potential of this? Not much.
Where does it leave the rest of the Canadian pairs scene? Possibly/probably on the outside looking in for an Olympic berth or Worlds assignment next season. Similar to how V/M coming back for 2018 caused a lot of Canadian dance teams to retire rather than fight for the leftover scraps, this is more likely to be demoralizing for those other teams who have been working toward Beijing.
And, piggybacking off the discussion in the "David Wilson Calls for new Leadership at Skate Canada" - how exactly is this developing and nurturing the younger pairs teams? There is a finite amount of time you can keep going back to the well of success from the last generation of skaters. Time to move on and put your money and time and support into the next ones.