What makes a good vision

The internet has got better in the city this week, but the traffic jam has got longer - so I have been reading the vision 2030 thing more of late. Now what makes a good vision document?

1. First, a good vision tells me very clearly where i need to get to - and usually that place is a good place. Vision 2030 is good here - To make Kenya a globally competitive and prosperous nation with a high quality of life by 2030. That is simple and good.
   
2. Secondly, the vision sells this place to you. It makes you want to be there.
3. Thirdly, it shows you what you need to do to get there - For 2030, I can see many flagship projects and framweworks that will be set up.
4. Finally, a good vision gets you going there. Its not a movie

2030 has a very good score on where it wants to get me to. I want to be there.