Pretty much all the specialists have issues with balancing.
The whole specialist concept is flawed from a gameplay point of view, unless you're making a battle royale type of affair.
Of course, from a monetarization point of view, specialists are awesome. Imagine the action figure revenue.
It's pretty clear why Dice put them into this game, and equally clear why they're not going to take them out.
Which makes it rather interesting as to how Dice intend to approach the specialist feedback loop. I think the reason its taking so long to deliver on this, is that they're having trouble creating a set of questions that narrows the scope enough to avoid the issue of specialists as a whole, without looking like its the meaningless exercise it actually is.