As someone who's writing a VRMMO right now, you must fully understand that writing comprehensible fiction in this genre requires critical psychological detailing between players and NPCs and evaluating real-life circumstances.
However, it can be the most fulfilling for spontaneous creative writers like myself, as I have no hindrance on weapons, skills, etc., as my characters (at least in my book) aren't locked behind a specific class or system (so there's no common power progression theme to follow).
Nor are there any pesky leveling attributes to keep track of. Most of my characters' players gain exceptional abilities or items based on their in-game actions. For instance, one of my characters, Chase Winchester, read 50 tomes of in-game lore and spells in a single day, thus gaining entry to the Archives of Grale'ulla, where he can read (though never leave) all books from past, future, and present.
I don't read LitRPGs, and nor will I ever, but if you're inherently inventive, try writing a story without playing the numbers game and figuring out whether you need LitRPG elements or not. You might surprise yourself.