Re: What direction would you have liked the third act to go in?
The real suit of Silver Samurai was at Yashida's funeral.
In the 3rd act there was armor like S.H.I.V.A. with blade like Muramasa blade. Don't know why some people call it Silver Samurai.
IMO this solution was ok, in comic S.H.I.V.A. was made to kill Logan, and Logan used Muramasa blade to destroy it.