One thing that stands out with HS2 is how few station stops there are and how its all very well to blast between London and Birmingham as fast as it can, but how useful is that going to be for anyone travelling to somewhere along the route - Birmingham International, Coventry, Northampton, Milton Keynes, Watford - all places that you'd expect would generate reasonable levels of passengers on existing WCML services, but wont on HS2.
I was on the fence between whether HS2 was worthwhile or not, but if it doesn't go north of Birmingham then it's completely pointless and a waste of money. As ever, money is spent in the south and the north gets crumbs