Why not implement something similar to Waterloo's LRT in Downtown Brampton? Their solution for getting a high capacity LRT through Downtown Kitchener and Uptown Waterloo was to split the northbound/southbound tracks to two parallel side streets that are walking distance from each other. The LRT tracks could potentially split at Main and Wellington, with northbound continuing up Main and southbound going on the parallel George Street. From there they can join at Brampton GO.
At the end of the day, the LRT needs to go through downtown Brampton in some way, considering it is the most transit friendly, most walkable, most dense, and arguably the most interesting part of Brampton. It would not make sense to detour all the way to another concession road and find some roundabout way of getting to Brampton, increasing the price tag just to avoid a relatively small section of Main Street. Also, splitting the northbound/southbound tracks can increase the coverage area of the LRT.
I think the arguments about LRTs ruining Brampton's heritage are silly. South of Wellington, where's the heritage? All those supposed historical homes are hidden behind trees, the road looks no different from any other suburban arterial, or like Queen Street south of the railway tracks at streetsville. North of wellington, the LRT will add life into the massive plaza on Main and Queen, though I do admit it would be hard to squish a right-of-way into the already narrow road...but that could be solved by putting the southbound lane on George St instead as I mentioned above.
