Eh. I'm not 100% sold on A&L's characterization of all the cosmic characters that they work with/plan to work with (for example, they write a significantly and bizarrely underpowered Adam Warlock, they don't do much with Gamora, and their Ronan is freakishly inconsistent with previous characterization). So it'd be a mixed blessing to have them snatch Jack out of asplodey!suicide!limbo; I'd be almost scared to see what they'd do with them. But it would be awesome if he showed up in the GotG book ready to kick some ass!