It is an unwritten rule of this wiki to avoid creating pages for films that are not yet completed. Why not wait until the film is released in 2020?
Also, it is standard procedure to delete content from pages when tagging for deletion.
Then we can move it. Why create overhead in the future for someone to just recreate something? It's bewildering why you want to run this wiki the opposite of how wikis work and with a bunch of counter-intuitive policies that are unwritten.
We sometimes do, like Aquaman and Shazam!, but for the most part, we hold off until it's maybe a year or 6 months before the premiere. And we usually lock it anyway to prevent people adding random sutff.
Perfect example: Aquaman (Movie) has been around since May 2017 and even tho it's release is less than 30 days away, it's locked so that no one can add any content to it. Worst of both worlds.
If something is going to be a policy, how about we suggest it on the board for that and get consensus? Otherwise, it's just arbitrary (and self-contradictory) whims. This is not the first time I've encountered policy-by-fiat here by a long shot.
I would assume that her maiden name is indeed Clark as the Superboy TV Series is a similar universe to the Donnerverse Superman films, where Jonathan referred to her as Martha Clark Kent. Since both entities were created by the Salkinds, I would definitely go with that.