According to NPR and the BBC, the Egyptian military has granted itself broad powers including legislative and budget powers, Constitution-writing powers, as well as lifetime appointments to the Egyptian military supreme council, as well as giving the President no power over the military.
The military-appointed Supreme Court nullified the parliamentary elections as unconstitutional.
I am not sure if all of these powers are temporary or not, but given the strong showing by the Muslim Brotherhood in the elections, is this perhaps a good thing?
I think it would be a good thing for the military to write the Constitution, given that the MB won. Let them write into a Bill of Rights, and a Republican form of government guaranteeing certain rights and making it as tough as nails to amend the Constitution. Then let the MB win in the elections. Guarantee religious minority rights and women's rights, then it should be good to go.