On due consideration I am now agianst HS2▸ .
This is 4 main reasons.
it's London terminal is Euston. it should be athrough station linking HS▸ 2 and HS1▸ or at least teh Great Eastern
Birmingham is a terminal station a long way from New Street. It should be through station with links to Wolverhampton.
Manchester is a terminal station it should be at through station with links to the North West network, although possibly in its favour it's right by Piccadilly
Leeds is a terminal station a long way from Central, again it should be a through station with links to the West Yorkshire network.
If you look at the LGVs▸ in France Germany and Spain they all serve the principle stations on the existing network with through trains and often terminate at places not served by the LGV.
I'm not against building a high speed line in principle I just don't see the point spending millions on a line that serves 3 cities with terminal stations.
I am still undecided on the point of the proposed stations at East Midalnds and Medowhall.
... or look at it this way.
No-one prefers a train that stops on their route. The disadvantage of going point to point is that it needs more station capacity (platforms and paths) to terminate a train from A at B and start it as a new one to C, and run a separate trains from A to C, rather than one from A to C via B.
On the other hand it's much easier, and cheaper, to get (or expand) a terminus in a city centre than a through line. And all the termini are within a train's length (200m) of the (or an) existing main station.
So if you put your money into termini, you should get as many seats on each route, faster journeys, but maybe not as frequent.
Then you add in "hybrid" trains that run on HS2 and then onto other places on "classic" lines, such as A to D and B to D. These do not also serve C to D, but then the line from C to D isn't high speed and already has trains.
So I don't think the choice such a clear-cut one. Of course you may still not like some of the compromises HS2 have arrived at; neither do I. For example, I think more "hybrid" and fewer "captive" trains looks a better bet, and I'm not convinced these new termini have enough platforms. But remember that we didn't have all of the inputs they had (luckily for us).