Maybe Mulder has a scruff because 2018-Mulder likes his scruff and realized he’s so freaking hot with it? I don’t think Scully will be missing in the first episode, otherwise, Gillian would probably haven’t started filming at the same time as David. Yesterday was probably like 5 seconds of the episode, so it really doesn’t mean much. And that hospital gown could have been a hairdresser gown too! She was in her wig, wit her makeup on and she didn’t look like some Aliens had abducted her or gravely ill. It’ll be fine.