...an addition 30 minutes total each day of travel time cannot be seen as a upgrade for those traveling every day.
Can't disagree, but this is where there IS extra capacity and people will sadly have to accept that or try and squeeze on to the faster services. That will be down to the individuals. We know at other stations people will cram on to a packed service than take a seat and you can't stop them!
It's quite obvious that during the week most of these 4tph services to/from Moorgate off-peak will be near empty - at least at the northern end of the route. The service is probably overkill even at the Moorgate end.
At weekends however, especially when there are events on (football, or a big event at Alexandra Palace or Finsbury Park etc) they will be more useful. But it will be the 717 introduction that really make the difference.
Creating a consistent, near turn up and go, service is probably a good thing in the long run. It may well encourage more train travel, from those who won't be used to the faster trains (or any trains!) and will value just getting to the station and never waiting more than 15 minutes.
What's the alternative in the short term? I'd love to see 12 car platforms and somehow squeezing in more trains, but that's not going to happen anytime soon. One can only hope that a lot of the commuters moving out are in positions that allow for more flexible working hours, and so we won't have 1500 more people all trying to board one or two trains each morning!