Looks like the choices of the Western LRT extension alignment are down to Carling or Byron: http://www.ottawacitizen.com/news/ottawa/inclined+light+rail+onto+Parkway/4909065/story.html
I personally favour trenching along the Byron corridor. If you're spending all that money to have the LRT be 100% grade-separated between Blair and Tunney's Pasture, why would you leave 1 section between Westboro and Lincoln Fields as in-median (the Carling option), only to have it be grade-separated again to Baseline? All that would do is create a choke-point on the system.
I personally favour trenching along the Byron corridor. If you're spending all that money to have the LRT be 100% grade-separated between Blair and Tunney's Pasture, why would you leave 1 section between Westboro and Lincoln Fields as in-median (the Carling option), only to have it be grade-separated again to Baseline? All that would do is create a choke-point on the system.