I think they should change a few little things reguarding how the type works in the new game cause its unbalanced.
The need to add a new light type to keep the game fresh.
Grass should beat light because grass need something. They have 5 weaknesses and 3 strengths 2 of them are covered by water plus water can learn ice which beat grass anyway.
Light should beat dark and ghost
Dark should beat fighting instead of the other way around
Ghost should beat dark instead of the other way around
Fighting already beats rock, steel, ice and normal so they don't need dark as well.
Psychic should beat fighting like normal.
Ghost and dark should beat Psychic like normal.
Rock should beat poison not psychic. Because how does psychic beat poison ??
Pretty much all that has changed is:
Rock beats poison instead of psychic
Dark beats fighting
Ghost beats dark
light beats dark and ghost
Grass beats light