If Hawking Radiation were added people would probably just report it as a bug since all it would do is make the black hole shrink over trillion year timescales...that is, except for very light black holes, which would evaporate almost instantly. Only medium sized black holes would evaporate at a watchable rate. And again...people would probably just report it was a bug, "Why can't I make a small black hole? It just disappears as soon as I unpause!" "Why can't I get my black hole to keep the same mass?"