Re Waterloo - Barnstaple.
The west of England draft route study (see thread on subject for details) is proposing that the Exmouth services be diverted to Paignton to give a 30 minute interval Paignton to Exmouth metro service.
Barnstaple services are proposed to be diverted to Axminster/Honiton to increase the service on this bit to half hourly. A new loop, location tba, but presumably Whimple, will be needed.
I think that transfer of Barnstaple line to SWT is now more likely and suspect that at least some of those Barnstaple services will end up at Waterloo. Not least because at certain times of the day there is already a half hourly service west of Salisbury and the single line means Barnstaple services will need to be integrated into these as there wont be room for 3 per hour, plus space for diverted GW HSTs even with another loop.
No they wont!
Those services will be worked by Exeter West drivers.
Those extra services (if you mean the ones from Exeter) will probably go over to FGW because SWT have to send crews 'passenger' to Exeter to work them which is very expensive and wasteful, transfering these to FGW will save SWT a fortune in wages and a unit. if its the ones which work from Salisbury to Yeovil, Honiton etc then these will stay as now.
Going by your logic the Salisbury to Bristol services should be in the hands of FGW!
Why cant you give it a rest for a while, every snippet of info and you are beating the 'Barnstaple to SWT' drum and it is getting rather tedious. FGW will be moving their 158s down to Exeter to work these services, nobody (except you) is going on about SWT taking the route on, cant you take the hint?
