Damn Snape was a good person in the end, James was a bit of an ashole. I'd love the Marauders but not for a whole new series.
I mean we've seen Hogwarts face peril, what more could they do with them. There's no danger, Riddle isn't around. It just wouldn't have the same level of interest and intrigue. That's why I'm saying a different setting would do better.
Perhaps one focused on the Death Eaters, their organization, leaders, ect, and motivations for their members. Could be interesting, set it in during the first war, focus on Death eaters, new characters ect. Could be interesting.