I think the only real chance of unlocking all the opening/ending scenes would be to have a shared save file - no one can play it six hundred times in a row with every possible character combination, but if they play it five times with five character combinations and then send it to another person who does the same, that problem's gone.
ChiBuki wrote...
Is the Clannad Uniform Tomoyo any different than original Tomoyo? I can't seem to use the special move (forward, forward, kick) with her. =\
Two major differences - one, school uniform Tomoyo can't use that special move, and two, school uniform Tomoyo can pick up basic melee weapons (but not the exotic stuff like fire extinguishers or giant stone penises).