Howling:The Road to the Dark Times, story arcs, and how we cover it

So, with the announcement that there's going to be a DVD that rereleases old episodes, under the title Road to the Dark Times, I think it's time we discuss how we cover older pieces of media retroactively being part of a story arc. There's been talk of this at Talk:Story arc, but I'm putting it here because part of this requires discussion of spoilers. Thoughts? Never Forget The Day The 456 Arrived ☎  12:43, October 6, 2020 (UTC)
 * I personally think that we should allow retroactive additions to older story arcs. Since Doctor Who and the rest of the universe isn't made by one person, rather multiple people over the decades, authorial intent doesn't matter as much here, as opposed to something like Attack on Titan, where it's a singular person's vision. Never Forget The Day The 456 Arrived ☎  12:48, October 6, 2020 (UTC)