For me, I do not really like the new Golds as they look to much like the Harvest Dragons. They do not seem to 'glow' the same way as the old ones did, to me they just look mustard yellow. Which is kind of dull.I was very fond of the old sprite.
The new sprite for the Horse Dragon, I wish they would have made that the male and left the old one for the female. Or visa versa, but have one sprite for one gender and leave the old sprite for the other gender. I do like it quite a bit, much better than I like the new Gold sprite.
The new Sunset sprite is very nice. I think the changes are subtle enough, but do make a marked difference.
The new Sunrise sprite is so subtle, that I can barely tell. I like this one, too.
I hope they leave all the other older dragons the way they are. Or if they do change them, then do as they did with the pinks, let us keep our older sprites. Thus making it more fun to collect older dragons in a new form. Unless the original artists do not want their older works to be used. But if the original artists do not mind, let us keep the older sprites as retired.
PLEASE do not change the Hollys, they are such an iconic dragon unto themselves.