I have a 4 gig plastic repository that I'd like to delete. Is there a way I can see what's in the repository without having to download all 4 gigs? Like the "Depot View" in Perforce?
You can do the following:
From the Plastic "Branch explorer" view --> right-click the desired branch/changeset --> "Browse repository on this changeset".
This way, you are able to navigate into the project tree and even download files if necessary (avoiding to perform a full workspace update).
You may also find useful the Plastic SCM Drive feature: http://blog.plasticscm.com/2015/02/plasticdrive-dynamic-readonly.html