A strong vision does not lend itself to mediocrity. A drive to excellence always seeks improvement. If you accept 95% efficiency as a goal, the efficiency will inevitably slip to 90%. If that’s considered “good enough,” it will become hard to keep it above 85% and so on. A vision is a goal that is strived to achieve.
Goals must not be unrealistic or unattainable, or the followers will simply give up trying altogether, becoming dispirited and demoralized in the process. If 95% of people fail to meet a standard, then that standard is likely too high and must be changed. On the other hand, the bar must not be set so low that little or no effort is required to meet it.
Based on your vision, set high goals that are attainable but with some degree of difficulty, and reward those who meet the goals. If a large number of followers are meeting the goal, raise the target. If only a very few are meeting it, lower it somewhat.
Investigate any potential bottlenecks that might be stifling progress and resolve them. Talk to your followers about possible solutions. The people who actually do the work are far more likely to be able to tell you why they are having difficulty accomplishing a task than their supervisors.