The very idea of God mode in DC, no matter how it's explained or justified, nullifies what DC is all about.  Their Justice League, regardless of its name or form, is always founded on the same principles of bringing in skills and abilities across the spectrum, uniting people of different races, species, beliefs, and even orientation in common cause.  Having someone able to just essentially flip a switch and tank everything thrown their way just makes the idea of such an organization that was founded on such powerful and worthwhile causes of truth, justice, freedom, and hope worthless and spits in the eye of everyone who hold their heroes in such high esteem.  So yes, I won't have anyone playing this God mode bullshit.