>>50226318Fire tend to be monotype which make them a little boring. Arcanine is cool but only "viable" because of "Intimidate." Rapidash and blaziken and ninetails all suffer from mono-type and dull. When they did introduce new fires, it was still boring ground and rock type. Once fire types get grass, fairy, or dragon, then they will have been redeemed as a fun type.
As far as
>>50225493 goes: notice how nidoran is an "interpretation" of a rabbit, versus ab actual rabbit design with cinderace. Thats what made Gen1 so special