Straight up, The Spectre's a problematic character. That naked haunt can do, literally, anything. You've got to resort to all manner of silliness to make room for the other JSA members, even heavy-weights like Dr. Fate or Green Lantern, to make an impact on the action.
Then there's the part where he's kind of deranged. He sees evil, he's gonna stomp it. If he flattens all of Cleveland along the way? Well...omelettes and eggs, ya know.
Still, he's one of The Charter Eight. An original JSA member. It always vaguely bugged me that he didn't get more presence in the JSA over the years.
So, if DC were going to launch a new JSA title, how would you give a role in it to The Spectre?