“Click to play” means that every time a webpage wants to take advantage of a plugin, the user will have to click to give it permission. Eventually, Google hopes to replace the old architecture with PPAPI or the Pepper Plugin API, which supposedly fixes a lot of NPAPI’s problems, if they can get traction outside of Google which doesn’t seem likely at this juncture. The folks at Mozilla have already said, “Mozilla is not interested in or working on Pepper at this time.” That sounds like a “no” to me.