I was also thinking, how do one address this, if we consider it even needs to be addressed? If you rebalance the effort of the LB versus the effort of countering it, you by definition nerf the overall effectiveness of the LB and will suddenly see it dramatically fail a lot more than it currently does. Those single target LBs arent generally the most game changing (even if they can), which would nerf their respective jobs into the ground.

Besides having obvious issues like some jobs being totally defenseless against them or unable to properly cope with them in a realistic fashion, maybe the problem is that they need to just be reworked deeply, or completely. Or maybe the fact that they hard counter so much is there to encourage people to hard counter pretty hardcore and make the life miserable of some other jobs at all times.