Is there a more overused thing in TTRPGs than Cthulhu?
Funny story...
Re: Overthulhu Saturation
When I created the basic outline of my campaign world in the mid 80s (and its secret history etc) I had read Lovecraft and Moorcock extensively.
So I created the campaign, and the gods were more like immortals from basic dnd, and not directly responsible for the creation of the cosmos.
So this set up uncaring forces of the lovecraft mythos versus the immortals .....
almost like law versus chaos. A lot of my friends and acquaintances had good versus evil, Tolkien, or dragons versus giants, or FR or Dark Sun, Greyhawk etc campaigns.
Through the 80s and the 90s, and into the 00s, people played and loved the campaign setting. "Wow", "Innovative", "Cooool"
Of course I used Tharizdun and mind flayers and aboloeths to an extent, but it was a fairly deep campaigns with story and lore and fun!
Then, slowly...it turned. "What's your world like?" "Thats kinda played out", "How boring" etc.
Still the people who get past that and play grow to love the campaign, saying "everything fits together".
So I'm still good to go...and understand some folks might be "bored" of my "innovative" campaign.
I'm fine really...
/runs off sobbing into the void