Dear Amanda.
Your thesis first sounds shocking, as intended, but; 'the truth will first look wrong as it will be unfamiliar.' (Feynman) so it's in with a shout. I think you find much of the path to truth, but suggest you then drift off to hypothesise and question. I hope you may read my essay which suggests a direct mechanistic and deterministic path in a similar direction, and some causal answers to co-variance. This nevertheless agrees or has analogies with your views;
"...we must never speak of more than one observer or universe at a time."
the "...observer-dependence of the vacuum."
"...multiverse cosmology will have to give way to a new kind of cosmology, one that is radically frame-dependent."
"...it is equally valid to describe reality from any one of an infinite number of possible reference frames."
"...each observer's reference frame defines a complete universe, and anything outside the frame is considered merely a redundant description"
I agree your identification of the low quadrupole, 'axis of evil' and the other CMB anisotropies, to which a solution emerges (consistent with electron twin vortex spin). A consequential recycling mechanism is more referred in the end notes, last years essay and elsewhere. ("...the black hole evaporates and eventually blinks out of existence, presumably taking all internal information with it."). But then returns.
A very well written, courageous and well argued essay. I really do look forward to your comments on the 'hard reality' analogies underlying the theatrical surface of mine.
Very best wishes
Peter