(Yesterday, 8:12 pm)Andreos1 wrote Me personally, I'd look at places like Team Valley and identity where people working there, actually travel from. 
Which points on the compass, are people living at and identify what sort of services could be created or diverted, which would help get people out of their cars and on to public transport.

The issue which exists now and will exist in the future, is David living at the top of Birtley, who shares the school run with Holly. 
He drops their kids off at Ravensworth Terrace school, before driving to the Team Valley. 
She starts and finishes earlier, but works at a different part of TVTE to David. Holly picks the kids up from school. 

No bus in the world will work for them unfortunately. They're probably lost and can't be converted because of circumstances.
There's plenty of others who could be swayed, with the right offering.

The service which I would look at in this case, would be the 21.
I've suggested on here previously, about peak and off peak services, offering a slightly different route. 
The peak 21 would serve Team Valley. 
The off-peak 21 would serve Low Fell.

During the peak periods, Low Fell would still be served by existing or improved services. 
However, they wouldn't be limited to just serving Durham Road (after all, not everyone lives on Durham Road).

The 69 as an example, could serve Team Valley during the peaks and continue to serve Saltwell Road in the off-peak period.
I'd look to have it diverted along Kells Lane and via Beaconsfield Road.

Ultimately, I would make it about buses going to/from the places people work and live.
Not somewhere close, but totally inconvenient.

Strongly dislike the idea of diverting services to different places at different times of the day, it's just confusing for everyone - kind of like when Stagecoach in Sunderland inexplicably had the 3 running to two totally separate termini on alternating points in the hour.  Its not even great with the likes of the 21 where it has multiple versions but at least they all serve the same route just stopping short.  If services are going to run to different places, give them a different number.  

Problem with serving office parks and the like is that there's potential demand at shift changeovers and pretty much nothing in between.  I don't think taking resource from main services at those times is the answer (nor is it how they should release buses for scholars leaving holes in core routes but hey ho) though - for the reasons above and because of course that pre-supposes people want to go from TVTE to wherever the (21 in this example) happens to go.