Living could absolutely meant being with Emma, WITHOUT kissing her on Jean's grave. Her being named a "sacred cow" in the very next issue on the debut run by an extremely popular team doesn't leave a great taste either.
Or at the very least it'd be nice of editors kept track of characters, their histories, and powers. That way they could offer alternatives to the insistence on creating newer characters.
On one hand you don't want a writer to feel restricted or boxed in, however since I started reading comics I can't express how often I've thought how much better or well rounded specific stories would be, if the most minimalistic effort was put into utilizing pre-existing characters in place of random author inserted character who'll be forgotten or limbo'ed after said run.
But this is all dependent on long term planning less those same characters be written completely OOC or contrary to all the characteristics their associated in order to force them into a role they are/we're not equipped to be in.