Looking back at Hanna-Barbera's freshman class of 1974, part of the reason some of these shows failed was that the studio wasn't aiming for the funny bone, but rather, the brain. Drama was the order of the day.
Devlin was one of those shows. You had a stunt cyclist, presumed to be in his early or mid 20's, working for a carnival, with his brother & sister as a support team. Not much mention of parents, so assume the trio were orphaned. The carnival boss is like a father figure.
Where did it go wrong? Not enough promotion. Granted, drama was big in 1974. So was live-action, as all 3 networks were experimenting, and H-B supplied ABC with one---Korg: 70,000 B. C., which had the misfortune of airing directly opposite NBC's Land of the Lost & CBS' Shazam!.
Back to Devlin. Along with These Are The Days, H-B was aiming to bring families together in front of the tube. While Days was inspired by CBS' The Waltons, Devlin drew inspiration from the real-life exploits of Evel Knievel, who'd made a few appearances on ABC's long-running Wide World of Sports. However, ABC blew it, big time. When it came to programming Saturday mornings back then, program directors weren't exactly brain surgeons, and never have been.
So could Devlin be redone today? I wouldn't even try pitching it to Cartoon Network at all. It wouldn't even be a cartoon this time.
Given the popularity of "action sports" (formerly known as extreme sports), Devlin could be rebooted so that he's not a stunt cyclist, but rather on a pro "action sports" tour, and, yes, this would dove-tail with the similarly rebooted Wheelie & The Chopper Bunch that we talked about before. See how easy that is?
To refresh your memories, here's the open to Devlin:
What do you think?