I wouldn't say that consciousness "unifies all egos", but *that* would be nitpicking. In any case, yes, consciousness is not "particularly human." It's obvious that this human shell (which has merely the peculiar property that allows me to see myself) is not any more significant than a grain of sand. But that's where I see all the strains of "philosophical realism" (existentialism, nihilism, cosmicism, etc.) to stop, which leaves them all wallowing in feelings of despair and futility, trying to find the way out of this absurd predicament by equally pedestrian means as those they (rightfully) criticize as meaningless. And that all stems from not making the last step of actually realizing the nature of consciousness which is to say also nature of one's true identity. You think that equating the source of human sense of "I-ness" (and existence itself) with the "overarching I AM" is some kind of delusion rooted in "monistic impression". I tell you, you are gravelly mistaken, because it's the other way round--knowing oneself leads to what others may perceive through their filters as "monistic impression." But as I said times and again, you have to see it for yourself. Thus the question is whether you have what it takes to get rid of every idea you cling to (i.e. cosmicism etc.) and see what remains, but more importantly realize who is actually seeing (you are conscious, so the only prerequisite is fulfilled). Then you may also realize that causality of manifested universe imbues all "creation" with profound meaning but also hefty dose of (quite selfish :D) responsibility.