Dear Murat,
I like some parts of your essay.
1. You gave good five points of Lee Smolin, about the problems in theoretical physics. There fails still the sixth point, unexplained consciousness: My essay 2013 about consciounsess
2. You claim that ''four-dimensional spacetime which is viewed in general theory (GR) of relativity as the physical object''. Many people so interpret GR as physical object, but I disagree. Carroll claim on page 138, that spacetime does not exist without matter. Similarly I claim too: SR explanation, section 4. I claim and tried to prove, that time does not exists without rest matter. In section 5 I wrote another argument that mass should be dimensionless and that this demands connection with space-time.
3. I hope that someone will successfuly attack Higgs Boson. But your argument does not convince me, because short lived and long lived particles are not different in principle. This needs deep understanding of Quantum Theory of Fields. Unfortunately it is not presented so simple as it could be, and we do not understand it enough.
4. You gave good links for measurements about quantum nature of space-time. But, results are logical to me, because spacetime does not exist without matter, and it is a consequence of matter, which is quantized matter: My FQXi essay 2012
I hope that we will read theories of each one further and comment them.
Best regards, Janko Kokosar
My FQXi web site 2014
My FQXi pdf file 2014
My essay 2013 about consciounsess
My proposal for more correct evalulation of FQXi contest