(26 Oct 2021, 4:34 pm)54APhotography wrote People know the difference between a 'X' and a standard bus, the selected stops would omit one on Southwick Road, one on Hylton Road North, and one on Washington Road. After that the bus would stop Nissan, Seven Houses then straightline to Concord omitting Sulgrave.
Personally if I was going to go for some form of express 56 I'd go for the following route with the aim for it eventually go down Follingsby Lane after Nissan when it finally opens (run it express between Follingsby Park and Nissan for now) - click here
You'd be providing a much quicker service from Sunderland to Newcastle but at the same time opening new links from Newcastle -> Follingsby direct and a much quicker service to Nissan rather than meandering around the world and replacing the extra 4's which are currently running and opening a new link from Sunderland to Amazon which is a bit of a pain atm.
I'd be even tempted to say run it all day every 30 minutes and terminate 2 56's at Concord. There's no real loss to the Sunderland end and if you timed the X56 and 56 to run as it's current 15 minute interval and timed the 50 to work with the 56 at Concord to keep the 15 minute service from there to Nissan there's no real losses than Sulgrave.