Good Planning Goes a Long Way
Not only will phasing lead to a richer play environment, phasing also allows different graduating classes to contribute meaningful legacies. It is critical that you work with the design professional overseeing your project to develop a well thought out phasing plan. This will reduce the amount of work that needs to be undertaken in the future when additional phases are implemented.
In many cases, you may be able to build elements during the construction phase that you can add to later. Examples include creating a mulch area with concrete edges to be populated by play equipment at a later date, or creating a gravel swale that can eventually be planted.