Have you considered how Agile can improve project outcomes in the GIS space? You can start faster, start seeing benefits more immediately, and learn to optimize processes and results versus other approaches. One NZ organisation recently saw dramatic improvements in time to value, and user/client satisfaction. While the case study doesn’t get into the details of how the process works, I’d be happy to share that with anyone interested. I’d also be interested in learning about your experiences with agile GIS projects if you have them.
http://info.critchlow.co.nz/hubfs/Critchlow-MOE-Case-Study.pdf?t=1469398667890