Not difficult at all to simplify some of the obsurities. For example, how about making all seasons 4 x the open return price. A simple univeral rule that the booking office staff would learn.
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fares could be left to a central body (ORR» or ATOC» ?) who would set them with regard to capacity, demand quality of service, speed etc and with a much simply set of restrictions etc. TOCs▸ would know exactly what their fares would be when they bid for the franchise and would price their bid accordingly.
A standard multiplier for weekly seasons is sensible, but they've painted themselves into a corner in my area (South Hants) where a rise from just less than 2x, up to 4x would be very difficult to implement. All because seasons are regulated and full price day tickets aren't, as it's a SE commuter TOC. As Barry Doe pointed out recently, the
SWT▸ long distance commuters are most vocal in their criticism of their fares, but never stop to think how much less they pay than casual travellers.
In terms of a suitable central body though, ATOC would be a complete waste of time. They have no regulatory authority as they are a trade/membership organisation for TOCs - i.e. they aren't independent. They really just organise cross industry services , exemplified by the Rail Settlement Plan, and the 'National Rail' website etc.
Paul