"Sustainable WAC: A Whole Systems Approach to Launching and Developing Writing Across the Curriculum Programs" (Cox, Galin, & Melzer, 2018a) lays out a systematic whole systems approach to program development that draws on complexity theories and integrates the use of sustainability indicators (SIs) for monitoring and assessing program sustainability. However, the SI part of the whole systems approach methodology may be overly burdensome and even premature for assessing the sustainability of smaller and younger WAC programs. Further, aspects of the SI methodology need clarification to be useful to the larger WAC programs that would benefit from its use. This article provides important correctives to and elaborations of the treatment of SIs in Sustainable WAC that will help WAC program directors more effectively decide whether and how to use this tool as part of a whole systems approach to develop more sustainable and impactful WAC programs.