Hi Shireen, "vision casting" is a vague term that's been around for a while.

It's easy to do a Google search and find articles with titles like "Five Steps to Effective Vision Casting".

The fact that this is so suggests one basic issue here -- if spiritual leadership consists of a set of human techniques, then it's not worth very much, and it's possible to find literally hundreds or thousands of articles that offer generic techniques on how to lead an organization.

So it seems like we need to use inspired sources of information.  Proverbs 29:18 ("Where there is no vision, the people perish") is used with vision casting.  However, we need to be careful, and it's worth noting that a modern conservative Bible translation (ESV) says "Where there is no prophetic vision, the people cast off restraint", and the SDA Bible Commentary says that the Hebrew word for "vision" here is "chazon", and it always refers to "prophetic vision".

I am a long-time Spirit of Prophecy student, and if we rely on prophetic vision, two things that stand out in my study are (1) an emphasis on heart religion, and (2) an emphasis on proclaiming the righteousness of Christ at the very end of time.

Below I've included a couple of Spirit of Prophecy quotes on these topics.

(1)

To have the religion of Christ means that you have absolutely surrendered your all to God, and consented to the guidance of the Holy Spirit.  Through the gift of the Holy Spirit moral power will be given you, and not only will you have your former intrusted talents for the service of God, but their efficiency will be greatly multiplied.  The surrender of all our powers to God greatly simplifies the problem of life.  It weakens and cuts short a thousand struggles with the passions of the natural heart.  Religion is as a golden cord that binds the souls of both youth and aged to Christ.  Through it the willing and obedient are brought safely through dark and intricate paths to the city of God.  {MYP 30.2}

(2)

The end is near!  We have not a moment to lose!  Light is to shine forth from God's people in clear, distinct rays, bringing Jesus before the churches and before the world.  Our work is not to be restricted to those who already know the truth; our field is the world.  The instrumentalities to be used are those souls who gladly receive the light of truth which God communicates to them.  These are God's agencies for communicating the knowledge of truth to the world.  If through the grace of Christ his people will become new bottles, he will fill them with the new wine.  God will give additional light, and old truths will be recovered, and replaced in the frame-work of truth; and wherever the laborers go, they will triumph.  As Christ's ambassadors, they are to search the Scriptures, to seek for the truths that have been hidden beneath the rubbish of error.  And every ray of light received is to be communicated to others.  One interest will prevail, one subject will swallow up every other, -- Christ our righteousness.  {1888 765.6}