He's a character with a ton of untapped potential--and Johns is not the person to tap it, pardon the choice of words--to essentially be the James T. Kirk of the DCU, but those character moments have been there over the years.
But really, not even the Hal of FLASH/GL intrigues you even a teeny weeny bit? Not the well-meaning dope who has his whole world turned inside out by Ollie Queen? Nor the dork who becomes best friends with an alien starfish and flies into trees on purpose?