... uh... well, the way they currently are?
Look, I get that this is a fantasy setting and that a fantasy creature can essentially look like anything that Blizzard's art team wants it to. I also totally understand that there are restrictions placed on any potential player-race model based on things like pre-existing gear sets/clipping, mounts, meshes, etc.
... but... this is a freaking dragon race. And they look like someone in a bad fur suit; they look like snake-men; like they couldn't even take one punch. Frankly, much as this word may be viewed as passe or even Byzantine in today's world, it still applies fully here: Dracthyr look like sissies.
Considering how long it took for WoW to address (I dunno if 'fix' is the right word) the problems with female Worgen, I feel like the only hope to rectify the massive shortcomings with Dracthyr's appearance is in the here and now. Because I frankly have no faith that this company - Blizzard or whatever they are now - will revisit the matter going forward. And, as it stands, these... things... are a huge and horrible eyesore - something I don't just want to avoid playing-as, but don't want to even see.