The Southern routes will be given the range of 5-6 + 50-69 + 95-96, and identified with the letter S. The south is the second largest population centers, and will need to be taken care of. However, there will still be a desire to consolidate, and reduce the number of Primary Routes. A number of routes connects with South Hills Junction. For almost all routes serving South Hills Junction will not go to Downtown. Instead, riders will be able to board one of the Subway routes that would be inbound.
While there is technically a South Busway, it will be renamed the South Corridor, and the S3: South Corridor will service that roadway. The current Silver Line will be converted to the South Busway. While this will remain an LRT line, it will eventually get renovated to support both buses and LRT lines. This will possibly upset people, but in my opinion, this just makes the most sense. The Silver Line will be renamed the S1: South Busway.