>>36520052>appeal of Johto Simple and relaxing routes filled with side areas (MooMoo Farm, Daycare, Ruins of Alph, Dark Cave etc.). A good chunk of presented routes let you completely skip random encounters which is appreciated.
Some great Pokemon designs. Starters and legendaries are extremely appealing.
Unique elements. Existence of whirlpools, importance of myths, japanese feeling etc.
>appeal of [...] gen 2Vivid GBC colours. Sprites in GSC are greatly enhanced thanks to that.
Tons of additions. They made gen 1 formula easier to tolerate.
Lack of autism-triggering mechanics. Natures are visible and they annoy perfectionists. Difficulty is easy so you don't give a shit about invisible DVs as well.
Also few other reasons which apply to both:
Amazing soundtrack. A lot of the tracks are memorable and singable.
2 regions to explore. It doesn't matter that Kanto looks kinda barren. It's there and people like it.