I just realized something.
The REAL reason Dragonair evolves into Dragonite and changes its design so drastically is because... their typing is Dragon. Stick with me. They were the original sole representatives of the type called “Dragon type”, not just in english but also in the original japanese (ドラゴンタイプ Doragon taipu).
What we tend to call “eastern dragon” (more snake-like) is actually a very different creature to what we know as the “western dragon” or just “dragon” (big legs & body, bat-like wings). The former goes by ryu in Japan, loong in China, etc. The later tends to actually be called “dragon” everywhere in the world.
And notice that the type is NOT called the “Ryu type” or the “Loong type” in Japanese.
So! The line begins as infant ryu/loong in the form of Dratini and Dragonair, snake-like beings holding a pearl... but because they are dragon types they end up morphing into a “western dragon”, a “proper” dragon.
I imagine something like this gave Pokemon more “personality” in its native Japan. It may have been “exotic”. Granted, Dragonite’s japanese name is Kairyu, but that could be part of the irony (especially since it’s written in hiragana rather than the more formal kanji).
Rayquaza would be the first proper ryu/loong.
btw this is similar to how the kirin is not a unicorn and the fenghuang is not a phoenix












