No more six members
Well.. why not...Evolving Psyduck and Croagunk is one of the weirdest and most unnatural things I've read here. And I've read a lot of things.
Once time we got bamboozled about Psyduck evolved into Golduck during Orange Islands arc.
I prefer strong pokemon over 25 years still as cute unevolved pokemon.
Brock and Misty are enough become good trainer that can evolve them perfectly.