The current experience is a little lacklustre. After clicking the + icon you see a list of options with verbose descriptions.
Gutenberg affords us the opportunity to make this a more visual experience. Especially when we factor block patterns in to the equation.
The nice thing about this design is that we can apply it to content creation flows as well. Here’s a rough idea of what adding a page could look like:
Discussion (and much more detail) can be found in issue #29558.