(19 Apr 2016, 2:23 pm)Andreos1 wrote Like the 64 does?
The 13 and 14 stop on North Road too - but obviously don't cross over the city, like the 64.

I can certainly see merit in the idea.
How routes would be split or what would determine what goes in to the station is another thing.

Yeah indeed like the 64 however I pictured the 64 as being a 'straight through' route? Otherwise I would've picked that as an example :p

Do excuse the crude Paint annotations below:

Basically, GNE go through North Road/Millburngate (to give one example, the Bishop bound X21 would then go on the A690 straight through afterwards) and Arriva the opposite. Therefore if drivers are playing silly buggers, they're holding their own operator up rather than the competitors.
Any terminating services in Durham (except very frequent ones with short turnarounds ie 21) go to the bus station where they can use the available/allocated stands to leave the bus.

The only thing this could impact on is other, smaller operators (don't think there are many, mind) - so if these go up to the railway station perhaps as an alternative. If there were a few services going up there one 21 or X12 per hour (delays permitting) could go up to the rail station and shuttle them?