In my opinion the biggest problem with Hacka now is the lack of dps. Looking at how it was on the archer tree, it was the only class that used sword and had almost no synergy with other archer classes, but some people still played the class because it had good damage. There were even some players who were Hacka mains.
Now it uses main hand sword just like many classes in the swordie tree, but almost no one plays and/or mains it because its damage just cant compare to other classes. It’s attacks are too slow and have too many overheats for the amount of damage they deal. (To be fair, skarp and grind cutter getting attack speed scaling should help with this)
I would not be against it getting more synergies with other classes though. Most classes that can work with Hacka have too many overheats, and since hacka itself has a lot of them, you end up with too many skills to spam. Having synergy with less spammable classes would be a good thing imo.
I would not be against Hacka being a scout class either. I bet something like Hacka-SR-Outlaw would be fun to play.
I made a Pelt-High-Hacka after rebuild, and while its fun to play, it just cant compare to other swordies, it has too many skills with low % and low cooldown. I wanted to make Pelt-Barb-Hacka instead, but Seism and Cleave not being usable with mount made me go HL instead.