az pipelines release create: it would be nice with a multi-stage pipeline to target an individual piece of the pipeline

when using the 'az pipelines release create' it would be nice to target a particular stage of a pipeline, eg: dev, qa, stage, prod (3 region deploy), it would be especially helpful for when terraforming a stack in a new region, to be able to kick off a deploy to a particular new region to a stack and target the release to that particular stack. right now, I can only kick off the release pipeline but I can say 'deploy to this one stack' but I can hit a deploy button via the UI...so, I know that it must be possible...