It was always going to be like it is via Stoke there was never any mention of a second train via the loop.
-Firstly there is barely any demand for more trains, units, crews and scarce paths are all tied up on busier services.
- Pathing wise would be incredibly difficult to find a path that fits over the single line between Crewe and alsager, over the very slow crossing at Kidsgrove and onto the mainline to Stone then across another slow crossover and finally through Norton Bridge into Stafford. Then there are precious few paths on either the Wolverhampton or Trent routes so nowhere to continue to any way. Everywhere wants more trains but it is a very congested network and isnt as simple as just running when everyone wants.
- Also Units, there arent presently enough units to get the main trent services to 8 cars, this should be a priority to put the 10 Tpe units to work before any theoretical thoughts about an extra stoke train. Massively more people would benefit.
Like anything in life there are compromises and with the paths and units available for now the new timetable with its flaws and inconsistencies is about as good as its going to get for a good few year's probably until a massive recast when part of HS2 opens.
I get what your saying, and fair enough but,
Unit availability - never been a need for a 2nd 350 service for the stoke route as 172s or 323s for example, should be added alongside or could even replace the 350 service currently on the line freeing 350s for other routes
(this being just a theory obviously) Giving you a 2tph by WMR from birmingham
Again obviously this doesnt take into account route congestion on the stafford to wolves line but timetable wise it could have the possibility to work??
(I mean, would that be a slightly better solution then having a london service going through to crewe when the unit could be used elsewhere?)
Pathing - understandable considering 2 trains run on the track between crewe and alsager every hour.
(But iam sure their is the possibility of a 3rd if timetabled correctly in the future)
Demand - considering their was demand for a london service to be retained on the stoke route, some high demand is their for trains?