I'm currently teaching a course called "Current Issues in the Doctrine of Salvation." I structured the course around a broadly biblical/theological definition of salvation, including both its vertical dimension and its horizontal. The first, the vertical, is what evangelicals have typically thought of as "salvation." Otherwise known as "getting saved," "going to heaven," etc. But theology must rediscover the horizontal dimension of salvation: wholeness, well-being, peace, reconciliation, etc.
Most of the tricky theological questions have centered on the vertical dimension, in the form of questions like "who can be saved?" Related to this are issues such as "how much 'information' is required to be a Christian? Must someone have concious explicit knowledge of Jesus Christ to be saved by him? Is to suggest otherwise (that conscious faith is not necessary) detrimental to the missionary "enterprise," which the New Testament so highly prizes? Is salvation potentially accessible (Terrance Tiessen's position is "accesibilism") to every human being, either in this life or the next? Or are unevangelized persons out of luck, with hell to pay?