The Road to Hell is Paved With Hugh Jackman's Letter of Intent. There really is no benefit to seeking letters of intent from actors (or their reps). Producers hate asking for them, reps hate writing them, and financiers ignore them. They're usually out of date. They're not binding, nor are they conditional to anything that's relevant. And yet, they still rampantly persist within indie producing and packaging.
Learn How to Construct a Letter of Intent. A letter of intent is a common way to express your intentions to purchase a property without having to write a formal, legal binding contract. The letter of intent is presented to a seller in the very preliminary stages of a project. The intentions of a buyer are spelled out clearly and simply so the seller knows exactly how the buyer wants to purchase the property, and under what terms.