Some very nice minis there. I concur with the amount of horse poses required these days, but we have to think how much in time/effort/money they cost to sculpt, mould and distribute - economics plays a big part in producing new figures ranges.
Agreed, but the dollies can be re-harnessed and used across ranges (and this is a lot easier and cheaper than dressing a human dolly, for example). The economics on producing variant horses, in fact, means a far better return than for the riders.
There really is no excuse and this alone means I wont be buying them. Unless you are going for the 'toy soldier' look with all the figures poised identically, a cavalry unit with just two types of horse looks cheap and nasty.