Would a new interchange at McLaughlin be better served by having the top (westbound) off and on ramps connect to Granite's current western end, than through a signalized interchange at McLaughlin itself? Somewhere in the bottom SW of
this lot perhaps?
Also, am I totally imagining a proposed eventual Granite-Queensway connection crossing Ogilvie Brook? If that's a real plan, let me know.
The following would improve lateral movement across north Moncton, and lessen pressure on the TCH for local travel. Even just going as far as Mapleton (3km from the current end of Granite) and omitting the additional lanes would do a lot.
3rd/turning lane on Granite (or 4, like you say)
McLaughlin-TCH interchange
Granite-Queensway connection at McLaughlin
Queensway-Northwood realignment at Mapleton
Northwood-Gorge connection (presumably where Richardson Lane currently is)