Ok, what are the most sought after lines for the american warmblood in dressage? And they are choosing based not on breeding but on accomplishment which is nice. And by stating typey what I meant was that since it's still in early stages they have already found what direction they wanted to take in "look" for their registry. Seems to be going in the right direction =)
If you are looking for an AWS dressage stallion then look at both the bloodline and performance. Not really any different than looking in any other registry.
If you have a specificity bred mare then if that stallion also carries papers in that registry (the one your mare has), it will be a bonus for you.