Here are some new ideas, not sure how many are viable

X3:
Newcastle Blackett Street
Newcastle Central Station
NON STOP VIA A184, A1 & A1231
Washington Galleries

X12:
Newcastle Blackett Street
Newcastle Central Station
NON STOP VIA A184 & A1
Swalwell Roundabout
Hole-In-The-Wall Estate
Parkhead Estate Gibside View
Winlaton Bus Station
Barlow Road South Farm
High Spen Stothers Road

X13:
Langley Park Stringer Terrace
Kaysburn Roundabout
Witton Gillbert Glendenning Arms
Framwellgate Moor Dryburn Park
Durham Bus Station

X19:
South Shields Interchange
Laygate
Tyne Dock Offices
Jarrow Bus Station
NON STOP VIA TYNE TUNNEL
Silverlink Retail Park
Cobalt Park Procter & Gamble
Northumberland Park Metro

X33:
Newcastle Blackett Street
Newcastle Central Station
NON STOP VIA A184 & A1
Kibblesworth Square
Ouston Cooks Corner
Perkinsville Bungalows
Pelton Schools
Hilda Park Briarhill
Chester-Le-Street Red Lion

X50:
Washington Galleries
Lambton Cambrian Way
Ayton Village Centre
Chester-Le-Street Red Lion
Plawsworth Red Lion
Framwellgate Moor High Carr Road
Durham Bus Station

X57:
Newcastle Newgate Street
Gateshead Interchange
Queen Elizabeth Hospital
Beacon Lough Estate Shops
Leam Lane Fewster Square
Leam Lane Estate Mitford
Wardley Bus Terminus

X61:
Sunderland Interchange
Grangetown Stockton Terrace
Seaham Interchange
Dawdon Princess Road Schools
Spectrum Business Park
Dalton Park
Murton Park Lane
Murton Station Estate

X89:
Kenton Shops
Cowgate Roundabout
Newcastle Haymarket Barras Bridge
Newcastle Central Station
Metrocentre