I don’t think the Fallen will be seen as equals by the traveller having left them,then again I’m near convinced the traveller is going to abandon us too (as the game is seriously pushing the “ no good or bad guys ,just greater or lesser evils approach to its philosophies) However Mithrax isn’t actually considered an enemy , like Caiatl ,so in a sense Mithrax is already equal to the guardians ,having run numous missions with guardians and uniting a house of allied fallen. It’s only until the Vanguard themselves consider the House of Light as equals,but Mithrax has earned his place ever since Zero Hour in my books.