(Yesterday, 10:29 am)peter wrote Couple of corrections to the above
2 PVR is 5 (seems you've missed a bus somewhere)
32 PVR is 5 (Docks is part of a loop rather than a layover)
33/63 PVR is 6
35/36 will interwork with the 24/25/26 - total of 16 buses. 
61/62/62A PVR is 9 (Pennywell is part of a loop rather than a layover)
Total of 41 compared to 45 across current routes

As for allocations I'd assume 61/62/62A will be Solo's making use of the current Graphites and Silver's which would be debranded.
32 and 33/63 would presumably make use of the 83XX Streetlites. Then the 2, 9, 24/25/26/35/36, and 60 all corporate livery 53/54XX Streetlites with the Drifter and East Durham Explorer's debranded. PVR reduction will allow Deptford's remaining Versa's to go plus 1 or 2 from Washington or Riverside too

I don't know but allocation wise I'd personally say

61/62/62A: Streetlite
33/63: Solo SR

With the Solo's moving to see off some of the non standard stuff ie. 638, 721 and 723 in particular since none got repainted into the new Tynedale Links livery or are still running around in GNW livery and I don't believe the seatbelts are needed nowadays.