Looking back on it, it really was a massive mistake giving Arriva the franchise in 2007, or at the very least not mandating a fresh order as I believe virgin were proposing, of both more voyager trains and carriages, the fleet was but about 6 years old then, indeed perhaps 'Project Thor' might have succeeded in that enviroment...
If they were now running a uniform fleet of 8 car trains (possibly bi-modes) I think they'd be doing fine. (And maybe still running to Brighton

)
As it was, we got a few HSTs back again, an unbelivably shortsighted sticking plaster. Now the HSTs have been withdrawn and the Voyagers are a rather inconvinient age, too new to realisticly dispose of, too old to extend in a realistic fashion.
The service is, astonishingly, identical to the one I remember 20 years ago, usually incredibly overcrowded and quite unpleasant, whenever I've been on a voyager(or a class 170 although I find they can be more unpleasant as they vibrate a lot more) and it isn't rammed it can be quite pleasant, although that's pretty rare of an experience.