Agreed - I think that 15/16 are massively over-egged on here.
Rather than have a realistic debate about the balance between the desire to have direct Airport trains to everywhere in northern England and the need to have reliable trains for everyday commuters, daydreaming about 15/16 seems a good way of keeping up the pretence that everyone can have everything (whilst conveniently blaming Westminster for a problem that we could easily solve if we tailored services around Manchester to what the infrastructure could cope with - instead of cramming more short trains over busy junctions - presumably to try to make the situation so chaotic that the Government will be forced to get their chequebook out?).
- There are too many services delayed around Manchester to provide a reliable attractive railway for car drivers.
- There are too many flat junctions around Manchester to permit the variety of rail services that we currently have.
- There are too many short trains running around Manchester (that could be increased in length and reduced in frequency to provide a more reliable service).
Either have a sensible discussion about what is practical (bearing in mind that local train services are heavily subsidised up here, so any infrastructure spending is automatically harder to justify than in areas where the TOCs are paying a premium to the Government).
Otherwise the process will be as follows:
- Spend hundreds of millions on the Ordsall Chord (supposedly to improve bottlenecks)
- Decide that this isn't sufficient so spend hundreds of millions of pounds on 15/16 so that more trains can run to Manchester Airport
- Find that there's not sufficient space at Manchester Airport for all of these additional trains (especially with the "Leeds" services going up from a 3x23m 185 that dwells there for ten minutes before returning towards Yorkshire to a 5x26m 802 that dwells for forty minutes, thus occupying a lot more platform time/ space and meaning it significantly harder for two trains to use the same Airport platform than is currently possible)
- Demand hundreds of millions of pounds on additional platforms at the Airport because we can't cope with all of the additional services that the Chord/ 15/ 16 meant now run to the Airport
- Find the next bottleneck caused by all of these additional services and demand yet more Government money (repeat to fade...)
Or, stop playing the victim card, look at what works elsewhere, have a simple map of regular services around Manchester that minimise conflicting movements, provide straightforward interchange to other lines, extend services to match the maximum platform lengths etc, do the boring/simple things instead of trying to link everywhere to everywhere.