Bishop chased and tried to murder Jean's family for more than 15 years. Dating him would actually be the worst thing to ever happen to the character, would make her seem like a bitch that would betray her family just to get some dick; that would be like Susan Richards abandoning the F4 to be with Doom and ignoring the fact he literally sent her kids to Hell, among other things. It would automatically make her a villain in the eyes of fans of Scott, Cable and Hope.
That said, JDW already revealed it was an afterthought and since Hickman is planning and writing this story before AoX, it's clear he won't even address it and will likely be forgotten as it should be.
As was discussed before in other threads (many times) you're wrong. Morrison's story only makes sense if Scott wanted to be with Emma, but chose to leave after Jean died because of guilt and depression. He even says to Emma (with a smile on his face ,IIRC) in of the issues before Jean died (the first when they reunite after Scott went with Logan and Emma was shot) that he made his choice (which doesn't make sense if he's staying with Jean, as he's already married to her).
If the story is that Scott didn't want to be with Emma, then the Phoenix Force was essentially raping him for years using Emma as a proxy without her knowledge by forcing them to stay together. If the story is that Scott wanted to be with her, but chose not because of guilt and grief, then it's about the PF allowing Scott to move forward with his life.
Anyway, to get back on topic, I don't imagine Hickman putting that much focus on romance, at early on, nor him really believing in "OTPs" that should be together just because they're classic, but rather putting characters together if he believe it could lead to better stories.