I don't really know if it will be a good character to write. Maybe, he is not tailored to live in a group environment, maybe he could be like Hulk and the power could leave Emmanuel after some time, leaving him as a normal man... I don't know, I am open to imputs, especially iof the other writers will be uneasy to write him...
The Spectre rarely worked well in the Justice Society, after all, IMO.