One of the attractions of translating 'Heroes' is that it's not the kind of play that I write. If it had been, I probably wouldn't have wanted to translate it. There are no one-liners. It's much more a truthful comedy than a play of dazzling wit.
If you let the plot be determined by what you feel is in the character's mind at that point, it may not turn out to be a very good play, but at least it will be a play where people are behaving in a kind of truthful way.