I think these engineering marvels whose FWHM (sorry I'm a bit rusty on what the right parameter for light gathering ability in this application) will be leaps ahead of current instrumentation is important. But have the science missions it will host (spectrographs etc.) received the same attention? Along those lines follow up observations are critical, for the groundbreaking work done at the bleeding edge meter class instruments at universities/labratories/observatories are needed too (also grad students,researchers, data reduction etc.)