For 3 trains the throughput target is 900pph, for 2 trains it's 600 pph.
2 hours is ridiculous and being quite close to various people who work at the park, they'd have said if the park has been that busy for a 2 hour queue, which it apparently has not although I may have missed something. The only way the queue will have been that long was if you went on a day when only 2 trains were being used, which 2 weeks ago was likely.
3 trains are now being used for the summer period.
I personally think Vampire is a great ride, lengthy and unique with quite a few really exciting bits, I can understand why people feel it's a bit "stop-start" but even so it's a great ride.
About the being rushed through the station, you won't have to ever wait in that corridor area as that would just be uncomfortable but more often than not you do wait in the station, which really helps the ride build a great atmosphere.
Also, about these "unnecessary stops" the ride will only stop in 3 places unless it has broken down, on the 1st lift if the ride team is going at maniac speed, on the 2nd lift if the team is a little slow and before entering the station, again if the ride team hasn't dispatched the train in front yet. All of which are definitely necessary.
Glad to hear you still liked the ride :D It's a great family ride.
Oh and an interesting fact about Chessy's Vampire, back with the original trains and station set up, the ride could get 1650 pph! :)
If you go down to the Towers today, you\'d better ride Th13teen.