Are we thanking Isabelle becuz she proves Dixie Kong doesn't have to be an echo either?
I would say so yes XD
my guess is that isabelle was planned to be an echo from the start, but sakurai said ".. nah, we could do better"
instead of heating up a plain bowl of rice, he sprinkled it with sesame seeds, gave it a little spice, topped it with a fried egg, and gave us a side of soy sauce!
they had all of the "ingredients" so to speak.
1. they already had a 3d model of her (just touch it up for ultimate)
2. her expressions are literally just different eyes and mouths on her "face" area. so no need for complex facial animations.
3. no serious RED TAPE that she'd need to cross, since shes already Nintendo.
4. theres no need to add another animal crossing stage, especially since we got a NEW one for ultimate. (same goes for an assist trophy)
5. her move set can easily take from what villager has (frame data/ visual effects)
6. she didn't need a voice actor since she talks in a mish mash of noise (some characters need multiple languages!)
7. even her trailer must have been very easy to create due to animal crossing's style of cutscenes playing out pretty plainly.
I honestly think this was just a tiny fraction of what sakurai could do. like.. this was just a SIDE project.
so if this is sakurai when hes just on auto-pilot. just think of what he could do for Dixie Kong when he's serious!