The funny thing for me is, I don't mind in principle many of the changes. I just find that a lot of them went overboard, or went REALLY hardcore for the few things I actually dislike. The Gold Dragon is probably the most conspicuous example; I don't mind a long noodly dragon, I don't mind wings that bring to mind fins, nor the "frill that runs the whole body length" thing.
I do mind the ridiculous "looks like a sword when stretched out straight" thing (who is ever going to see this?! Why would dragons look like that?!), and the incredibly stumpy wings that Gold dragons got. (I also dislike the Black Dragon...but only because those wings are straight-up nightmare fuel for anyone with arachnophobia, such as yours truly.) Some of the designs are quite smart, though personally I think they erred greatly by putting what is clearly copper patina on the Bronze Dragon, but that's a pretty minor complaint.
Like, I get that they wanted a new look, and that gold dragons in prior eras have looked different compared to other dragons. I just don't understand why the wings had to be so stunted. Why not have them be....y'know, grand? Something that actually befits the power and majesty of such a creature, as opposed to something that doesn't even look like it would be useful for gliding, let alone flying.