The answers to these questions gave the director himself in one of the recent interviews. As it turned out, the death of Gamora did not cause Hannah a drop of regret.
Everything was decided in advance,
He said. The fate of the adopted daughter Tanos was predetermined at the stage of writing the scenario to the "Infinity War".
But it is not necessary to accuse cinematographer in ruthlessness, moreover, to radically rewrite the plot of third "guards", too, do not have to. True, Gunn stated that his scenarios always change during the work, but this is his personal feature, and it is not connected with the final of the Avengers.
Note that the director plans to introduce a new version of Gamora in the "Guardians of the Galaxy 3", the one that has not yet been familiar with Starl Lord and his friends. Unlike his twin, dropped from the cliff Tanos, this gamora alive and unharmed.
How the events will unfold in the trickel, we will not know soon. Work on new "guards" will begin at no earlier than 2021, while James Gan is busy on the shooting of the "suicide quivering squad". The Superhero DC project will be released on August 5, 2021.