#3 It shows off different characters that aren't usually featured
Due to the stacked WWE roster and limited time on RAW and Smackdown Live (plus the ridiculous new Wild Card rule), there are only so many people that can be featured, but this new title provides many more opportunities. People like Drake Maverick and R-Truth are rarely featured at all, but with the new 24/7 Championship, they get opportunities on YouTube and random RAW and Smackdown spots to showcase their talents and charisma.
With the Wild Card rule in place, even fewer stars are being featured, and while no one in the 24/7 title picture is going to get a big PPV main event, they're getting opportunities that they normally wouldn't. It wouldn't surprise anyone if WWE managed to find a way to ruin this, but with people like Truth and Maverick doing their own thing, these characters are finding a way to shine, and it's brilliant for the fans.