Couple of things from me

It would make more sense to divert some buses to Market Street to alleviate pressure on Newgate Street and to lower the journey time

The red line no waiting will need to be heavily enforced 

Until about what, 10 years ago, Newgate St was a very busy terminus for Stagecoach so it's not like it can't cope

Will expect a load of regulated running at Gateshead for some of the higher frequency routes