Game Freak needs to ditch 3ds era assets, texture works and etc.

[Pemalite]

Well. No. They don't need to do anything. - But it would be nice!
At the end of the day... As long as the general games aesthetic is nice and crisp, I couldn't care how the game is portrayed, provided it is enjoyable... Could look dark and gloomy like a Darksouls game for all I care... Or full of effects like a Frostbite driven game or simply Cartoonish.