We know that Yamato is geting drained by the Lotus flower and from the Hashirama's living clone....Yamato is keeping all the zetsu stronger then a normal zetsu would be !
Is it possible that the effect could be reversed so that Yamato would get the power from the lotus and from the Hashirama's living clone ?
In this case all the zetsu will get to normal and they would be alot weaker and Yamato would become alot stronger !
Maybe Yamato consciousness could transfer or get drained into Hashirama's living clone completing the process of a complete replica... of a living human in this case " Hashirama Senju " ?
In this case we would have a fusion of Hashirama powers and Yamato consciousness into a living human clone !