It's not just comfort, fare etc though is it? How about tackling the lack of Sunday and late night trains? Yes, I know that maintenance needs to be done, but surely it would be better to close/reduce just when work is being done, rather than a blanket reduction/closure even when there's no work being done?
Our small town football club took 15 coaches down to London a few weeks ago for a Sunday FA cup match. It was literally impossible to travel by train there and back the same day from our town. If the match had been on a weekday, or a Saturday, most of those would have gone by train. There is simply no way to get to London by train to arrive there any earlier than early afternoon on a Sunday, the earliest train arrives in Euston at 14:05. If that's not bad enough, the cost for a return is £105, whereas the cost for the coach was £25.
Another problem is trains to airports. I can't get a train to our nearest airport, Manchester before the early morning peak departures, so unless my flight is late morning onwards, I can't get there by train. Same on the return, last train back is 22.10 which is no good for late evening arrivals. That's weekdays, Sundays are worse, can't get there for a Sunday departure until early afternoon, so only useful for late afternoon/evening departures.
If the Govt/Rail firms are serious about leisure travel, they need to improve the Sunday and early morning/late evening provisions.