Bletchleyite
Veteran Member
Ours should be too, certainly on long distance intercity services. Loads of customers already think this is the case anyway; that your ticket is valid only on the train you selected. Ticketing doesn’t actually match customer expectations; it hasn’t for a very long time.
It should probably be noted that the main objections to the LNER trial are that it is a trial of increasing fares significantly, not the structural aspects of it (though some of course don't like those I can see the sense in them).