; (III) improve the orbital variance efficiency of the space station (or space stations, considered collectively, if there is more than one such space station) authorized by the license; or (IV) otherwise do not substantially modify the space station (or space stations, considered collectively, if there is more than one such space station) authorized by the license. (B) GSO license modifications Except as provided in paragraphs (3), (5), and (6) and subsection (m), and not later than 90 days after the date on which the Commission receives a request to modify a license granted under subsection (b)(2), the Commission shall grant the request (including any amendment to such request) if— (i) the Commission determines that the modification or modifications meet the requirements (if applicable) under subsection (e)(2)(B); and (ii) the request is limited only to modifications, or a class of modifications, that— (I) increase transmission capacity; (II) improve spectral efficiency, such as by improving compression technologies