The developers are doing a great job of building the slums of tomorrow.  Glass boxes with poor insulation and glass panels falling onto the street below is not what we need.  Mid-rise development with buildings that foster community are needed.  The developers don't make enough profit with the  lower buildings  and the OMB almost always give them what they want, which is not what the city needs.   Look at Britain and France to see what older high rise communities that are not well planned and built can turn into and be afraid.