Improving the ghost experience

I love the ghost play and how it interacts with the karma system but I’d love to see the experience expanded a bit. In particular, I’d like there to be more opportunities for meaningful (and lasting) impact on living Zois, (maybe through the use of the soul echo or through letter writing). For example, aiding Zois in developing skills, impacting their relationships (like encouraging siblings to get along), or impacting their values and encouraging good/bad karma actions.