Snipes bill to start the rabbets follow by a rabbet plane
In yesterday's example of the crown, the largest cove is a 1.5" radius. Here, the cove is only 1.25" radius.
The advantage that hollows and rounds encourage is the ability to make specific profiles. I have little doubt that there are several examples of those who have placed yesterday's profile both there and where today's belongs because the profiles are approximately the same size--2" x 2"--and have a large cove.
Who will notice, right?
Hollows and rounds allow you to make moulding profiles that compliment each other.