I can see the whole WFH thing being squeezed and reduced in the near future, there seems to be lots of people out on leisure pursuits whilst their bosses think they are working!
The general consensus is that with a General Election iminent, all the public sector pay disputes, railways included will suddenly be magically resolved to try and make the current Government look good to Mr & Mrs Voter.
Of course we all know (as do they) that the current Government are going to lose the General Election, it is just a question of how badly.
That means they can harvest the forest of magic money trees, promise absolutely anything they like, throw tons of money around like confetti and then leave the actual paying for it all and sorting out the resultant mess on the ever growing 'Let Kier Stamer deal with it' pile...