Genuinely, in most circumstances it becomes a noob trap. Hacking offers less DPS than just virus + shoot, and TTK decreases dramatically if you don’t take the time to hack the target. But her TTK is not low enough that Hack can act as a guarantee against mobility / defensive abilities.
The primary power in the ability seems to be its wallhacks, but that’s a huge non-sequitor since Sombra can essentially just spot people while invis anyway, and it’s not worth wasting the time and concentration on hacking people. Especially since, again, if Sombra’s engaging, there’s very few use cases where wall hacks are actually going to be useful to her.
So we realistically end up with a 1.5 second ability lockout. Which is such a small amount of time that most often, its real functionality is to cancel abilities that are already in progress rather than to stop abilities from happening in the first place.
But since “in progress” abilities, particularly ults, have been slowly cycled out so that they can’t be cancelled, again, realistically, hack has a few very specific interactions:
-Stopping Cass ult (not brilliant)
-Stopping Moira ult (Takes some planning, if Moira just 180s with her beam it’s just going to stop the hack)
-Stopping Sigma ult/grab
-Stopping Rammatra/Doomfist block (Doomfist block being much more useful since he’s a sitting duck while doing it and it drains a CD, unlike Rammatra
-Stopping an in-progress Ball slam (very useful since now he’s stuck in the middle of the enemy team)
-Stopping Illari/Torb turret
-Stopping Immortality Field (shooting is usually just as fast.)
-Stopping Ress (again shooting.)
-Stopping hog heal (not great since it’s no longer a CD)
So you end up with an ability that doesn’t actually have that many great use cases. But when it is used, it still manages to be annoying, and it polarizes very specific matchups (Doom and Ball).
-Hacking HP packs (fine.)
Blizzard has zeroed in on making Sombra an assassin. Hack is like a vestigial organ left over from when her kit was more focused on team support.
EMP still works as an ult because it’s allowed to be long. Hack honestly doesn’t fit in her kit any more, and it’d be far better for it to have either different functionality or to be replaced.