You are entitled to your understanding of those sources, but for me it is very clear, State without Deen is anything but Islam, and Deen without state cannot be implemented in its true form. The difference here is you wish religion to be separated from state and I wish religion to be abolished forever and Deen be implemented in its true form. I am sure you must be aware of difference between Deen and religion.
This is a big statement, I thing I cannot make such a statement, no matter what form of government, they still need improvement, justice in context of governing is absolute justice ........ for me till the day any human remains homeless and hungry the justice is not completely done. Capitalist secular societies will never be able to achieve this.
Roti, Kapra, Makan ........... is one of the goals set by Deen and mere mention of this resulted in many still following Bhutto. But this can never be achieved in isolation unless the whole Deen is implemented.
However, coming back to my original statement this is what I said
Mortal Humans in their million years of existence have never been able to rule the Earth and based on what we know about our capabilities as of today we will never be able to do that. We benefit from it but we cannot rule it. We have our world to rule but again many before us had their's to rule.