I've learned that in the theater the story is everything. Every lyric, every line and every musical gesture has to propel the journey of a given character or the overall plot.
No one in the whole movie ever asks anyone, Did you write this letter' Part of the reason is that no one wants to hear that it isn't for them. As soon as they read it, they want it to be theirs.
I was always a big fan of waiting a year of two to groom an NFL quarterback; let him learn and mature.