High-Level Plan for Delivery
This slide's main focus is to establish high-level planning and an understanding of the activities of the phases (under each segment of the flow). This slide does not focus on the efforts within the phases (chevrons spanning the phases). That more detailed information would be explored on a different slide. There is a lot of information on the slide – enough to explain all the high-level thinking for each phase; but it uses the space well. It's well balanced and informative.
If you want to add icons for each phase or for each effort that spans the phases, it would add another level of visual appeal.