The New World
Even outside of Dr. Staple, the shadowy group proves (terrifyingly) efficient. The ending of Glass radically alters the landscape of the world around them, and introduces the general population to the existence of people with superpowers. Elijah's ability to think so many steps ahead gave him the edge over Dr. Staple, and sets her up to fail the organization she otherwise serves.
But even with viral videos about the superpowered people running rampant, the secret organization feels acutely prepared for it. There's clearly a system in place to deal with any and every problem that could arrive to threaten the status quo. The group is shown multiple times to be completely aware of their status and role, seen throughout the film meeting up in busy public places only to turn on the spot and reveal that everyone there is a member of the conspiracy.
It's what a secret spy group should be doing to contain the news of superpowers, taken to the darkest logical conclusion. When they get the superpowered people under their control, they don't try to lecture them or teach them lessons. They kill them. And not just in simple ways, but with methods that suggest they've been preparing for this.
Kevin can survive a shotgun to the chest? The soldiers show up with a high-powered sniper rifle and put him down as quickly as they can. David can survive anything except water? Drag him into the convenient puddle and drown him. The forces working for this cabal seem to know what they're doing when it comes to superpowered figures, even before they show up to a giant superpowered fist fight.
What This Means
At the end of the day, this mysterious organization is probably the most engaging thing that comes out of the ending of Glass. They've been working against superpowered figures for ages, without failure. The only leaks have been merely stories, modern myths like comic books and movies. Seeing that kind of all-powerful group dealing with a wholly realistic and newly enlightened world would be fascinating, and could serve as an interesting next chapter in this universe, if it continues.
While Shyamalan has said this is the ending of the story he wanted to tell, the clover group is a perfect dark version of S.H.I.E.L.D. for a more realistic superpowered universe. Shrouded in actual mystery and with the kind of decayed morality that would allow for the drowning of a hero, this group is the dark (and efficient) version of S.H.I.E.L.D. that superhero movies have needed. Not just a grim and gritty one, but a cold, calculating and conniving group that could believably contain superheroes.
Directed and written by M. Night Shyamalan, Glass is the third and final entry in his superhero trilogy that started with Unbreakable. The film stars James McAvoy as Kevin Wendell Crumb/The Beast, Bruce Willis as David Dunn, Anya Taylor-Joy as Casey Cooke, Samuel L. Jackson as Elijah Price/Mr. Glass and Sarah Paulson as Ellie Staple.