damn I can't believe no1 has done this yet but kakashi now has a normal eye because of naruto and as obitos rinnegan and madara ms was shown I believe that madara will use a jutsu that will switch there eyes and obito will unlock his true strength after all it's been stressed lately that when a uchiha have there two original eyes it will awaken there true strength.
so to conclude I think obito will survive as its been stressed that they want him to repay his sins not by forfeiting his life but by using it for others also he will escape using his enhanced ms as with both eyes his speed using kamui is op and I believe he will awaken susanoo and could go to help the third with the other zetsu tobi.
so to conclude I think obito will survive as its been stressed that they want him to repay his sins not by forfeiting his life but by using it for others also he will escape using his enhanced ms as with both eyes his speed using kamui is op and I believe he will awaken susanoo and could go to help the third with the other zetsu tobi.