==The matter-free regime; what can be said?== 
 Here I raise the question of what happens when all of the matter is squeezed away or converted to energy (existing only as radiation), near where an event horizon would form (assuming for the moment that is possible).  What are the properties of energy, in the matter-free regime?  There is clearly a rationale for a push-back, or back-reaction due to the effusive nature of energy and its resistance to compression.  The Eddington limit provides a clear mechanism by which inward and outward forces can be equalized to resist further infall, but a question arises of whether there is a point where we observe what could be called the liquefaction of energy - such that it behaves like an incompressible fluid past that point.  There also is a rationale for an absolute limit to the compressibility of energy (ref. S.K. Kauffmann, C. Schiller), which controverts the notion that energy is uniformly like a photon gas, regardless of how it is squeezed or stretched.  This, of course, introduces non-Maxwellian terms and/or non-linear Electrodynamics (abbrev. NLED). 

 I shall be adding a paragraph to the section on observational and theoretical developments, and some links to papers relating to NLED effects on black hole dynamics.  As it turns out; there is a common thread with the topic of MECOs, in terms of a common pool of ideas and a cross-over of researchers with the NLED Black Hole group.  I have in mind citing a paper by Christian Corda and Herman Mosquera-Cuesta, to illustrate this connection, so that Wikipedia readers can see there has indeed been a filtering of the ideas shaping the MECO concept into the mainstream of Black Hole research, even if the terminology and lineage of that work is not being preserved.  I would guess that some researchers who were influenced by the work of Abhas Mitra, or that of Leiter, Robertson, and Schild, lack the courage to speak up on their behalf - but still draw inspiration from their ideas, and seek other ways to validate those concepts.  It is far easier, it seems, to validate the halt of collapse using Quantum Mechanical fluctuations as the rationale, than it is to show that the same dynamics can be achieved by modifying Classical Electrodynamics by including non-linear terms - which experiments show are required.