Just to be clear, this would be the destiny of Twin Oaks if Muirfield is connected up to Casino Drive:
A continuous route between the TCH and the MID West Industrial Park.
Now, this may sound frightening, but it would be easy to designate this route as a non through trucking route (as it should be).
The value of establishing this connection is to make traffic patterns
within the northwest end more direct and more efficient (which in fact would also be more ecologically friendly too - fewer emissions to get from Point A to Point B).
As a neighbourhood collector, speeding along this route could be an issue, but traffic calming measures could be employed to reduce this possibility. I personally would favour multiple stop signs at intersections to accomplish this. Speed bumps are a nuisance. A couple of roundabouts could also be inserted along the street as well, especially one at the Twin Oaks/Evergreen intersection.
I think this connected street should be viewed as being similar to other existing neighbourhood collectors in the area such as Evergreen or Glencairn. Planned properly, this could benefit the vast majority of neighbourhood residents without unnecessarily infringing on the rights of a small affected minority.