Currently, all the premium plugins will continue to work if your subscription expires, the subscription just controls download / update.
I can’t guarantee that’ll always be the case - we’ve considered building subscription checks into plugins in order to license them. I realize that’s probably a bit less “friendly” but we also want to encourage continued subscriptions (either paid or via MSA). Again, at this point none of our premium plugins actually do this - it’s just something we’ve considered.
Right now, we’re hoping that the pace we’re releasing lots of cool tools and tutorials will keep everyone subscribing. There’s several new plugins/resources and some great tutorial series scheduled for release before the end of the year.