Someone of his experience should be useful against supernatural threats, even if it's usually outside his wheelhouse. I would definitely like to see Hal in more horror-themed stories.
Funny enough Dream would totally be someone Hal would have an interesting dynamic with. He would likely have an even more interesting dynamic with Death since he doesn't seem to take her very seriously. lol
It's not like it isn't a realistic possibility too. Every Crisis event requires a sacrifice and Hal being prominent in Dark Crisis can't be a coincidence. I doubt he's been that prominent just because Pariah thought Hal of all people could understand him wanting to "make things right". In the end someone must be biting the bullet(aside from Beast Boy) and they'd want to make it look like its "for real" this time.
Has Gaiman ever written GL in anything before. I think it's right in his wheelhouse.
Yes, Superman/Hal team up in Green Flame that was supposed to come out during Action Weekly era, but came out much later.
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