Older Than They Think: People waiting for the title character to show up, but he never does and probably never will, and the cast must decide whether or not they will take control of their own lives instead? Sounds a lot like 1935 play Waiting For Lefty by Clifford Odets. Of course Odets' play was otherwise completely different, an up-to-the-minute social drama with a large ensemble and many flashbacks.
Beckett as said on several occasions that Godot does not represent God, so much so that he even regrets naming the character in such a way to cause people to make the assumption. In actual fact "Godot" can be taken to mean pretty much anything that you would wait for to the point that you fail do anything else but wait.
Beckett was also very clear that Pozzo was not Godot, although he understood where people were coming from when they thought that.