How strong could Shisui have been if he didn't die

What tier of power would Shisui be in by the start of part 1 and then where could be by early Shippuden and the war arc

Scenario 1: Shisui doesn't get poisoned by the Aburame root agent and fends off Danzo without loosing an eye. The uchiha massacre is avoided by koto

Scenario 2: He still gets poisoned and loses an eye to Danzo but doesn't kill himself and the massacre still takes place ( Itachi still awakens MS )