Chris Evans wants to retire from acting and become a director.

https://www.huffpost.com/entry/chris-evans-retiring_n_5029020

I am still trying to figure out why Black Widow and Tony can't be brought back by bringing them from months ago in the past and having them live in the present. Gamora did it. I am guessing it may have something to do with Thanos not really loving Gamora so possibly she did not lose her soul for the soul stone when she was sacrificed for it, but bringing anybody from the past should screw up the future events. At the end Gamora probably did not go back in time where she came from because her time portal was destroyed wasn't it?

Hulk tried to bring back Black Widow.
I expect/suspect Gamora will be back one way or another. The comics follow a different scenario/storyline but Gamora is brought back in those as well. Zoe Saldana is also one of the actors that spoke out so publicly to save James Gunn from being fired (thrown away for past actions/words with no chance of redemption).