At that point, Justinia didn't know Leliana will become the divine though. As I said previous, I wholeheartedly agree with softened Leliana being better. But not a better divine.
Given what we know of chantry zealots, and how stubborn they are, I highly doubt they will remain stable long. A divine must think about the future as well, not just her own rule at the time.
Yes, but what is the correct path for the future? First, immediate future or a long term plan? Having problems now (and surviving them) might pave a better way than living clamly now and leaving a huge mess to the next generation. If you put the stability of the Chantry above all, doesn't it mean the organization has become the end instead of the means?
Cassandra had some pretty interesting conversations about the issue. After discovering the secrets of the Seekers, she wondered if that was the fate of every organization: to end up caring more about the organization itself than about their supposed goals. Then it's justified by confusing the organization's interest with the common good. "We cast aside ideals in favor of expedience and tell ourselves it was necessary. For the people".
Leliana puts the ideals far above the organization. Cassandra wants a balance. Vivienne wants the organization. There are pros and cons for every side.