125,000 trips in the first month is impressive but I agree it is meaningless and gives absolutely no indication of the future success of this service
numbers such as has been quoted will not be maintained and anyone who thinks they will be are quite frankly living in cloud cuckoo land
I do believe that that the service will be a relatively popular service
but after 6 or 12 months and a more detailed breakdown in exactly what journeys are being made and from where to where will determine the frequency of future timetables
There's two sides to it though, yes there are a lot of people who are traveling on it because it is a reopening/there are steam services/because it is there*.
However as they drop away it could well be that more people start to use the service as they realise that it is reliable/faster/cheaper than driving*. Although some who come for the above reasons may then decide that they like the area and travel there for leisure purposes several times over the year.
(*delete as appropriate)
As such I wouldn't be surprised if we saw passenger numbers being somewhere close to the 800,000 to 1,100,000 mark over the first year (i.e. higher than predictions but not quite as high as would be expected if we only use the first months figures).
There is very little demand south of Hawick because other through routes are quicker for long distance traffic.
There is also unlikely to be demand for more than 2tph south of Gorebridge so additional double track is not going to be of any use except in increasing reliability (which seems to have been pretty good in the first month).
The whole point of this reopening is to create a branch line for commuting into Edinburgh. That is what the demand is for and that is what will drive custom.
It may not suit enthusiasts who yearn for through trains to St Pancras but daily commuting from new build housing estates in Dalkeith to office jobs at the Gyle is what will make the line a success.
Although I agree (given that there is scope to provide longer trains) that redoubling isn't too much of a concern just yet I'm not convinced that a through route is as dead as you suggest.
That is because although it maybe quicker to get from Edinburgh to Carlisle that isn't the full picture as it could still be quicker to take a slower train if the frequency isn't great. It maybe that there are better connections with the slower trains from other areas meaning that they provide a quicker door to door journey than taking the faster route. Price and potential new developments could also play a part.
Yes it is unlikely to happen soon, but I tend to take the view of "never say never", especially given how much rail passenger growth has been going up in recent years making the track that we do have busier and busier.