I agree w/ you, for the most part, and you bring some very good points.
(And great pics, do you have any more of the lower sect. of G2, and surrounding area?)
Quoting T, "It is clear the original interior chambers are completely different aesthetically and structurally than the outer pyramid conversion layer with the palace facade architecture being particularly telling as to the difference in ideology of the two builders which to me separates them in time as well...."
It's also possible that the builders, (the actual workers) were the same group(s) of people for the duration.... but the Master-Builder, (the top boss) was changed/replaced in early/mid-project, which caused the differences in methods, etc.
For me, the question is: How much time separated these 2 very different thinking Master-builders??? Was a new King throned @ this time, and did he then replace the M-B, and did they also change construction plans, methods, etc.???
Campbell's Chamber roof blocks are Tura Limestone until proven otherwise.
THE Cartouche in Campbell's Chamber IS Authentic, as are ALL other RC's Glyphs, until proven otherwise.
"This Forgery 'theory' has more holes than a sieve basket."