I hate not being able to edit comments
I guess my point is that it's not inconceivable to imagine Hal with a sense of humor, as he HAS been portrayed with one in the past. I never said it was a particularly 'nice' or good sense of humor (he's always been a little lame, imho), but he does TRY on occasion, and he's not completely business at all times (he's the type who would probably tell Hawkman or J'onn* to lighten up). There is a sense of play and fun in a lot of GL stories (I liked GL/GW too, but its not the definitive version of the character). I dunno, to me it's like claiming Batman has no sense of humor. No, Bats isn't known for his quips, but he has been written as having a wry sort of humor in the past (in some mediums more than others). Having Reynolds play a wisecracking Hal Jordan (if that's the direction they choose to go with) may be different than what most people expect, but it's still perfectly valid.
*Which is amusing as J'onn himself has an understated sense of humor that is absolutely charming