Lets look at the double deck PVRs
- Fab 56 (14)(16 with spares)
- Red Arrows (13x)(15 with spares)
- Tyne Valley Ten (16x)(18 with spares)

Therefore, the only 2x services that add up to 33 vehicles in total are the TVT + Red Arrows. And it's unlikely that GNE will re-increase the Red Arrows back to every 10 mins.

My prediction is as follows based on the TVT + Red Arrows getting new buses with spares as well:
- 6071-83 to Consett for Red Kites
- 6100 to Consett for Red Kites
- 6084 stays at Riverside incase Tachographs are re-introduced
- 6043/44 to Consett as spares
- 6045/46 to Percy Main as spares
- 6047/48 to Deptford as spares
- 6099 to Crook as spare for X21

Then:
- 6001-07 & 6049-55 to Consett replacing 6149-61
- 6149-61 & 6118-21 to EYMS