I still don't really see the value of keeping everything equidistant. It makes sense to me to have things concentrated a bit closer to Jasper. I really like the idea of the LRT line underground at Jasper, and then a line at grade with bike facilities a block north. I also think there will be a lot more connective use between the Millwoods-West Line and the existing underground line.
As a side note: I know the city was working on branding the lines with actual names..anybody know how that is going? It would make these discussions flow a bit easier....

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Anyways.. It might just be the way I think about it, but I don't see it so much as three parallel equal lines downtown. Putting the new line at an equal distance to Jasper line and the Nait extension doesn't make sense to me because Nait/Jasper are actually just two section of the same line. From the portion under Jasper people will be able to get to Clareview, the Northwest, or Century Park/Heritage Valley. So while Churchill will be the main Hub, the portion under Jasper is still kind of a hub allowing for 3 different destinations. The closer the new line is to Jasper, the better you reinforce a sort of long blockwide hub through downtown with 5 different mass transit destination options. You don't really get more destination options by moving it north, you just make the connections a bit less efficient. Maybe I would feel different if the NAIT line was discrete but to me by trying to space things evenly you are creating redundant connections with less efficiency.
But again, that may just be the way I think about it.