The multitudes of authors that contribute to this wiki give it something of a schizophrenic tone, sometimes. Just for comparison, have a look at SCP-231 and SCP-999: One is giving birth to cthulhu or something like it, and will inevitably kill us all. The other is… a tickle monster. A literal tickle monster, great with pets, children, and adults alike. There's a discrepancy here, I think.
The "How to write an SCP" page describes pretty explicitly how to create fearsome and nightmare-inspiring creatures, and most of the entities on the site are, in fact, monstrous or otherwise threatening to humankind. The Foundation doesn't merely collect weird things; we contain objects and animals that are an obvious and explicit threat to sanity, reality, and/or civilization… Except for the half-cat, the eye-pods, the funky japanese vending machine, the rock that falls sideways, and the bomb that makes people gay.
I appreciate variety, myself, but sometimes I wonder what, if any, tone this setting is supposed to have. The bulk of it seems to suggest something of a cosmic horror story, one of those worlds where the pitiful humans are making futile struggles against forces which they cannot comprehend, let alone fight, making it all the more heartbreaking when they inevitably fail. Then there are a lot of black comedy references thrown in. Then there are some white comedy references thrown in. Then there are SCPs which are just weird for weirdness' sake, suggestive neither of terror nor joy.
Mostly, I wonder how much "Hope" this setting is permitted to have. If there's a consensus on whether or not humankind is doomed already, I missed it. True Cosmic Horror is typified by a complete absence of hope; any battles won are pyrrhic victories that do nothing but delay the inevitable. Dystopias or "Punk" settings, on the other hand, are typified by a minimum of hope; while it is still possible for individual people to make a difference, the differences are usually small, and the odds of making a large-scale lasting change are slight (SCP Foundation = Paranomal Punk?). Beyond those, we move into lighter and more optimistic sorts of stories… but I don't think that the Foundation is really a band of bold, handsome, and morally-upright monster hunters. But where are we on this spectrum? Are we supposed to be anywhere, or is it just determined by each author individually?