Bendis has said in interviews that the lineup is going to be constantly changing depending upon the mission and/or story being told. If I had to guess, the main constant will be Naomi, as she's clearly a big priority for DC with the new TV show coming up. Hal will no doubt show up, but I don't think he'll be a permanent fixture appearing in every issue.
I do think Hal will be showing up around the DCU fairly regularly because DC knows the character is popular and he's a sure-fire way to goose sales. Remember, Hal is sales Viagra.