Interesting topic. Anecdotal feedback from me -- not only is the mandatory reservation thing a PITA (pain in the arse), when we're staying in Coventry and trying to collect prepaid tickets, the new ticket machines use the same logic. Couple that with the fact that they've gone from (I think) about ten ticket machines down to three, which is a p*ss take in itself, the queue is bonkers most days because people are just trying to buy a return ticket to Brum etc., but now have to go through all the faff of trying to find a train with an available seat before it'll let them buy one. All we want to do is find an available machine, punch in the eight character reference number, and get on the train..
In summary:
a) In Avanti world, why can you no longer just walk up to a TVM and buy a walk on fare to a popular destination (BHM / MKC etc.) without having to fanny around trying to get a seat reservation (I know the obvious answer to this but until Avanti put in the new ticket machines it would never have been a problem)?
b) Why has Coventry station ticket office gone from ten TVMs down to three?