I'm intending to create a network of buses in East Gateshead.

I already have the following:
19 (Gateshead - Racecourse Estate - Team Valley - Harlow Green - Wrekenton)
59 (Newcastle - Quayside - Saltmeadows - Friars Goose - Heworth - Hebburn - Lukes Lane)
68 (Bill Quay - Heworth - Furrowfield Estate - Deckham - Gateshead - Teams - Metrocentre)

I would like to add more services to the network, but I don't want to duplicate or replace any existing major GNE routes, any Ideas?