In answer to Chris B's points.
Yes 14 tph out of 24 will terminate at Eastbourne Terrace and emptied and doors shut. See thread on Oxford terminators. They are already making provision for overcarries with a platform at Westbounre Park!
I believe the idea is that all Westbourne Park turnback sidings will be signalled to passenger standards with platforms, and the odd overcarry to the sidings will be accepted - with 24 tph arriving at Paddington LL from the core route, which are 10 cars long, there won't be time to go through the train checking for passengers within the designed dwell time - unless maybe you have 10 staff on the platform doing a coach each...
As to fares don't forget not only Reading but Twyford, Maidenhead, Taplow Burnham Slough Langley and Iver are all outside Zone 6 and so far Oyster▸ . So separate Crossrail fares is going to cause confusion to say the least ie Will Crossrail fares be available on the fast Oxfords to Slough change for Taplow?.
There is no fundamental difference to the current situation on
FGW▸ (and indeed on most
TOCs▸ ) where Oyster
PAYG▸ fares are available only to some last station either in or outside the zones, with trains carrying on beyond?
What you may get beyond the zones is something like the
WCML▸ where there are currently either Any Permitted or
LM▸ only fares and seasons.
But in either case I can't see a new 'fares problem' developing here - the only decision to be made is where the final Oyster PAYG station is on the line. The current examples of Watford Junction (LM) and Grays/Chafford Hundred/Purfleet/Ockenden (c2c) are outside the numbered zones and Oyster PAYG just charges the appropriate TOC fare for those destinations already - and they are now discussing extending Oyster PAYG up the
FCC▸ lines to places like Welwyn
GC» ...
Paul