There's good LitRPG & there's GREAT LitRPG
Good LitRPG tells a decent story, with a solid plot, stats, abilities, and a good hook. It could be a portal fantasy, sci-fi, stuck-in-game, or another world. The BEST LitRPG makes the reader feel like they are in the game itself. There is no disconnect between the imagination and the words on the paper or screen.