I don't know... Aside from the hair and the girly outfit the water gen 16 knuffel is clearly a remake of the gen 1 water knuffel. The rest is just Frin evolving drawing style.
I like the gen 16 knuffel better than the current for 2 reasons mainly:
1) I love gen 16's hair! Not sure if it would look as good as an avi item, but those tails are adorable
2) The current's eyes are a bit... I don't know...inexpressive. Would have liked it if she had the same style as gen 16
That beeing said, I do like her and I can't wait to see how she ends up
