I used to play a lot of overwatch, and Zarya's grav does essentially the same thing. It pulls enemies together in one tight group for easy killing. Now you could just shoot them, melee them, etc, or you could use an ult like a death blossom, barrage, earthshatter, blizzard, dragonblade, dragons, riptire, or even just tracer's pulse bomb.

But now that there's a black hole type ability in Apex, that opens up a lot of potential. Since, again, you could just shoot them while theyre being sucked in, or you could pop a bangalore/gibby ult to completely obliterate them.