Solution:
we are aware of the upcoming FSE capabilities that will start to get included in WordPress 5.8.
The whole idea behind FSE is that the layout of a site should be editable without the need to compose custom themes. However, there are some key differences between what FSE will provide and what Toolset provides.
As a starter, single posts templates in FSE behave pretty much as theme templates: one template to rule all posts of a given type. Toolset gives much more control on which template should be used for each post. In addition, Toolset provides Dynamic Sources, which ensure that blocks used in a template will produce the right content for every post using the template; the mechanism to load dynamic content in templates crated with FSE is not clear yet. Finally, archives created with Toolset offer total freedom for layout and content design, while the new Query block for FSE is still too narrow in capabilities and options.
Problem: I have a custom post type and a repeatable field group (RFG) in that custom post type. I would like to create a list of all the custom posts and in that list show a list of the RFGs associated with that post.
Solution: This requires a nested View structure. Since it is not possible to create a nested View in Blocks, you must use the legacy Views editor. The process is outlined in another ticket.
Problem: I have a custom image field and I would like to display a default image if the field has no value.
Solution: Use a series of conditional blocks to display a default image if the field is empty or display the custom field image if the field has some value.