I wouldn't say Blasphemy... Look at Chinese dragons... They don't have wings!
Its a different style of dragons some like... Some don't... Western have wings, Wyverns have two legs with wings BEING their second set of legs (Personally my least favorite of the dragons, but they're still mythology.. I love Penguins and they look funky!!) Chinese are dragons that fly using the magic given to them by the 'gods' or whatnot, I don't know exact legends of them.. but I know I <3 how they fly *circles!!!*
now if Meeps is talking about just a grounded dragon like a Lizard or something.. Then yes, thats a lil degrading to dragons.. Thats a monster not an intelligent and magical creature or in Istaria's case, godlike...
Now what would look nice, is either a Chinese styled dragon (Which No thats not possible from a mod, that'd be stretching the dragon textures and body structure into a COMPLETELY different creature altogether) or simply a dragon that runs in the air or has sparklies behind it, then you have the complaints as you did the dryads 'Too much lag!!' Though I personally say screw the lag, its proof of magic in the dragon get over it, and turn the graphics down
I have however, and I know others have too, seen my dragon bug out and not have wings (Instead graphical holes where wings should be..) that you might could tweak that bug and make a mod out of it... simply covering the holes with texture... But you'd have to take into consideration the missing head that tends to go along with the wings
Just a lil bit from someone who knows a bit of Dragon Mythology... and slightly agreeing with Meepsa... dragons are a species of their own, having from little cat-sized dragons that fly, all the way to the Chinese that're hundreds of feet long with no wings! None should be exiled or criticized because of their appearance or lack thereof... They are what they are ^.^ and should be respected as who and what they are