Shannon's Outdoor Space Problem - Part 1

Shannon from Calgary comes to John and Matthew with a problem with the outdoor space on her home. "Hi John and Matthew, My husband and I are in the process of designing our landscape plan for our new home. Although we live in suburbia, our aesthetic is quite modern and we would love to continue the feel of our interior space to our exterior. We want areas for lounging, enjoying the sun and entertaining but also have 2 young boys so need ample room for playing/roughhousing and waterfights We have a large pie lot and would like some feedback on the best way to approach the design of an odd shaped lot. Here is what we have come up with so far but any advice you could give, especially in terms of materials for edging/decking/plantings would be much appreciated! Thanks! Shannon & Andrew" What do you think?