It would be nice if we could have a duration specification for permissions on the cloud. Often I want to show something off to people for say a week or two weeks, but forget to revert its permissions or delete it.
At this point I'm subject to the whims of the internet as to whether my cloud credits get completely destroyed by forgetting to do this.
What I'm imagining is something like this:
Permissions->{ All->{"Read", "Write", ..., "Duration"->Quantity[1, "Weeks"]}, ....}
or something analogous.