Also, what do y'all think of the major non-Lovecraft eldritch abominations (ie. The Warp Gods, the Ogdru Jahad, the SubGenius pantheon, the Scumdogs of the Universe, Zalgo, Slenderman, Gozer the Gozerian, the Elder Evils, Nihilanth of Xen, etc.)?
Hit or miss, personally. I like Gozer only because I like the Ghostbusters, and it's semi-rare to hear about Sumerian-age deities.
I like the Gods of Chaos, because the interpretation of them goes quite deep both into the world of 40k and sort of the meta of being human. They're concepts as much as entities and that's fertile ground for a lot of exploration.
Most modern Elder Things though fail my biggest test....in none of them really feel unknowable. Lovecrat's Elder Gods were a name, some iconography, some half-described rites...and that's pretty much it. The reader was free to insert a lot of their own horror. NuHorror, those things are given a voice. I'd sort of liken it to how Satan is represented in the Constantine Movie. You've got the ultimate evil of the universe personified in a bald dude with tattoos and some some snarky dialog with his favorite damned soul.
I like my elder things incomprehensible, but that's kind of at odds with modern fiction/fantasy and what sells. Perhaps what made HP Lovecraft work is that his prose was so heavy, the relatively loose treatment he gives to his elder things somehow came as a relief. His stories are more about the people involved than the Elder Gods, which are the backdrop framing the story. And I think that's where many writers miss the bus in trying to recreate the magic. They mistakenly assume what made the stories work is the Elder Things themselves, and give way too many pages to telling instead of showing. What I think made the stories is work is the actual characters, prim and sort of bland as ever. But you're grounded in them, which makes all the weirdness way more effective and mysterious. Versus....well, basically Cloverfield. Where people don't want to wait for the build up and just want to go straight to Cthulhu, only find that without the build up, there's no real pay off other than seeing some thing in a monster suit stumbling around. (And yes, I realize there's a build to Cloverfield, but it's mostly done in typical Hollywood tension building shots of half a leg and a building shaking, and you get your pay off of a big stupid monster looking stupid while helicopters fire missiles at them.)
Or take for example Prometheus. What does an unfathomably ancient and advanced race look like and do? They look like a big muscle-y bald dude who waits about 5 minutes before HULK SMASH everything.