Can we have a thread where just analyze evolution in Pokemon and talk about based evo lines, retarded evo lines, mons we wish got evos or pre-evos, evolution methods, regional variants, design elements, lore, biology, etc.?

Just pick an evo line that you think is based or retarded. You can say why you like or don't like it and/or what would you do to improve it. Other anons can chime in to agree with what you said or try to refute it

I'll start
>has lifelong dream to fly, knows Wish by event
>turns into a pupa before emerging as an intimidating adult dragon with wings
>finally achieves dream, even learns Fly upon evolution
also
>gray part of its head is kept across evolution, expanding to a shell after evolving before retracting to its underside after evolving again as a form of protection
Based