User blog:Inept Wiki User/Index III, IV etc - which stuff where?

Index III - something which many Toaru fans are waiting for and have been doing so for a long time. Many also think about stuff beyond that, seeing as there are too many volumes to be animated within a mere 24 or so episodes.

One thing that quite a few people have likely thought about, when considering what a future Index anime series may be like, is which volumes would be used in which series and how they would be spread out in that series. The selection for a single series is limited depending on what can be covered in the episodes available, as well as the content of the volumes themselves. If done wrongly, the result will be that things get rushed or drag on for too long, and stuff important to the story will be left out.

This is my question:

If you had the choice of deciding which of the unanimated volumes would be used in future Index anime adaptations and how they would be spread out within those series, how would you do it?

Edit (01/10/2017): With Toaru Majutsu no Index III finally announced, now seems a good time to revisit this topic.