Collection gives dynamic-ness to sitejet websites.
However, currently, sitejet only allows 1 layer of collection usage.
An example is at: Collections - Sitejet Help
However, if anyone tries to add another collection (existing) using the CMS fields, sitejet will show it when you design the page. But Sitejet will not populate the page.
This will lead to creating multiple static pages as overview pages. This leads to repeat-one-self. This leads more works.
In particular, many people are jumping ships from WordPress to Sitejet. And many have a lot of pages on their WordPress site. Creating an overview page statically will slow the transition.
One example, authors have multiple books, this many-to-many relationship if using dynamic nested collection. This is the easiest way to add more dynamicness to sitejet.
At least 2 or 3 layers of nested collection would be wonderful.