Well, if you've worked your backside off to be able to afford that big fancy mover, why SHOULDN'T you pick up some extra collectives than a cheap, ex pony clubber that the owner has decided they want to give dressage a go on??
I've been there, done that. I started out on a QH x appy mare that was built unbelievably downhill, had never done more than a slow, forehandy trot out on trails and hadn't been ridden in over 12 months.
Photo is of the first time I rode her, to give you an idea of just how downhill she was!
I got that mare, from travelling as she did in the above photo, to competing at the state dressage champs at novice level and training elementary, getting reasonable scores with 'nice' tidy, accurate tests.
I think every rider needs to be able to turn a horse like that around, as once you can get something that is absolutely NOT built for dressage to be through, then you can get just about anything through!!
I have just forked out in the double figures for a rising yearling warmblood colt. He has 3 very good paces, that are not enormous. He will only mature around 16.1hh as I'm only short and find it difficult to put a giant over 17hh with enormous paces together. And he has a BRILLIANT temperament.
I feel that I have certainly paid my dues in riding the 'average' horses, I've always been the one out there with the nutter ottbs, the 'weird' breeds that no one ever did anything with. I've been lucky to get the ride of a few nice wb's in the past to compete and train, which have helped to get my name out, and now I think it's about **** time that I had a nice warmblood of my own. That is naturally over the back, engaged hind quarters and willingness to work.
So no, sorry I don't agree with that dressage is snobby and so on, due to the 'favouritism' of the big moving warmbloods. Because it's not a case of snobbery or favouritism, it is just dressage! We want to see big moving, loose, elastic horses that swing over the back and can easily sit behind. Of course they're going to score better if they have these qualities as well as being ridden correctly and accurately.