Originally Posted by minstrel
Finding a draft cross or tbh a QH, TB, Welsh Cob, anything really that isn't bred for dressage that has the potential to reach those middling levels is going to take an eye that a rider who hasn't yet reached those levels (and in the OP's case perhaps hasn't even that much experience with the breeds) might not yet have. So if the rider is happy in the lowest levels, and REALLY doesn't want to see how far they can really go, then it doesn;t matter either way - the type of horse you choose shouldn;t have anything to do with dressage ability, as it's not really the deciding factor. However, if getting to movements like half-pass, pirouettes and flying changes is something that the rider wants, then why limit yourself when you could have a dressage bred horse?
Not having an eye to buy the right draft or draft cross to do dressage is a good point but then, they likely wouldn't have the eye to pick a good warmblood or any other breed. I would definitely encourage anyone with limited knowledge (regardless of discipline) to find a good trainer, take a few lessons and find out if that is truly what you want to do. Then hire that trainer to help you find a horse that will match your needs as well as abilities. Chances are, if you are going to advance to the higher levels, you would be doing a horse change at some point anyway as MOST people do not go from beginner lessons to Grand Prix on the same horse.
I wouldn't suggest buying any horse with a discipline in mind before one has taken some lessons in that discipline. What looks great on the outside might not be what you really want to spend your time doing. You MIGHT find that it is even better then what you thought and decide to invest more into the hobby/sport.
What ever the case, I wish the OP well in his/her search for that right horse.