All my thoughts on the Mark situation
I'm gonna cover all bases
I don't like Mark in S3. He's this annoying, asshole red herring type character. At the end when he's there I was always like "Why is he here?".
Then S4 comes around eleven years later and when we meet Sidney, we learn she's an author but nothing else which is odd. We wanna know more about her! This is the first time we've seen her in over a decade. Is she married? Does she have kids? It's very odd we don't learn this about her. We do get a quick line where she says "I have people I care about" so i guess that could mean she does. I always assumed she wasn't married and didn't have kids at this point, though.
I also always thought the explanation that she was hiding them away to be BS. Sidney decided to embrace the attention, wrote a book that became very successful, and went on a country wide book tour because of the obvious big success. To jump into the fame and attention while trying to hide your family away doesn't work. It doesn't go together. Kind of dumb.
So in S5 when it's revealed she's married to Mark and has kids I always felt iffy about it because we don't get official confirmation in 4. So to me I was like "Did she reach out to Mark after not speaking to him in eleven years? Damn I wish we were told she was with him in 4, it would make it seem less odd"
Mark in S7 was of course suppose to be Patrick Dempsey. Sidney was suppose to be with Patrick Dempsey's Mark ALL ALONG and Mark is now going to be Joel McHale. Not a recast, a different Mark. It's awkward because we all know it was always planned to obviously be Dempsey. Outside of this I'm ok with that cause this means Dempsey's Mark was just a cop she knew for a couple days 26 years prior. She eventually met McHale's Mark and got married and had kids (Before the events of 4 based off the ages her kids will be in S7).