Please rate these cases according to whether or not you think the proposed capability itself is useful and important.
For some Use Cases, the first step is to determine what the options are for implementing it. In those cases, the "Capability Delivery Plan" (CDP) reflects that, with language like "At this time, the delivery plan is to search for, identify, and evaluate available technologies that XSEDE could use for this...". See GRP-03 for an example.
This doesn't mean, of course, that we are just going to do an assessment of the options and then mark that Use Case completed. The results of the assessment will inform the way we proceed with bringing that Use Case into production.