First of all, he's an Arab. Once upon a time, Arabs were mostly employed as literary Ethnic Comic Relief or Monster Fodder. You know; the shaky guy whom the Mummy attacks after he's killed the Unnamed Watchman. In Wolf-Man movies, the role goes to a Cockney or a Scot; in Vampire movies it's the Bulgarian toady; in American movies, it's the Black Guy.
Anyway, nowadays Arabs aren't attacked by movie monsters, they are movie monsters. People are afraid of Arabs (or anything remotely like them), so it's a perfect time to capitalize on that fear by bringing back Ali (and this guy, but that's another story).
Second, he preys only on the rich. Now, the fact is, most crime is poor-on-poor violence. But, face it, that's just not sexy. Mr. X snatches Mrs. Y's purse and gets away with ten dollars, two credit cards, a hairbrush, and a lipstick. Yawn; I can read the paper for that.
What I can't read in the paper is Prof. Byzantine's plans to use trained water fowl to halt traffic on Seventh Avenue while his men, disguished as Shriners, fake an outbreak of Legionnaires disease at the Zilvervissen Arms, providing him with the 15 second distraction he needs to replace the Reade Ruby with a paste substitute during the gem exhibit transfer at the Afval Museum. For that, I need to read comics.
Ali preys only on the rich. The filthy rich. Who tread poolside gravelpaths made of the crushed spirits of the myriad myrmidons they have enslaved. Who don't even have the decency to stay in their peacock-lousy penthouses, but must flaunt their superior station by "slumming", as they sashay down filthy darkened alleys wearing their white ties and pearls. Pearls! They're just asking for it.
Ali will punish them.
For their sins.
Long before john Doe in "Seven".
Long before John Cramer in "Saw".
Long before Pinhead in "Hellraiser".
But not before the Spectre, of course.
Sure, Ali is evil. Sure, he's collecting millionaires for a profit. But he steals from them with delicious comic book irony. He replaces his victims with his own men (because we all know how easy disguise is in the Golden Age), who reverse the sinful behavior of the captives, all to Ali's benefit.
In fact, when the millionaires are rescued, their captivity has opened their eyes to their sins, and they each pledge to turn over a new leaf. Except Bruce Wayne, who's a hopeless layabout.
But even Bruce Wayne is changed, and learns to punish sin "the Ali way".
Just kidding! That was the substitute Bruce Wayne. Not that Dick ever suspected that, of course. It was the Golden Age.
The real Bruce Wayne (as Batman) does catch Ali-fever, however. When he captures Ali, he and his young sidekick laughingly torture him until he's nothing but skin and bones.
Bring Ali back, DC. A thin, bitter, Ali bent on revenge, and wearing that same saggy, Moroccan waiter's outfit.
And send him ... to Star City.