From Dark and Darker Wiki
Same anon here, my reasoning why Rogue has no identity/niche: 1. Lockpicking for free is no longer a niche that Rogue had, due to the Bard which arguably has far more team utility/buffs than a Rogue can ever hope to, while also having access to superior ranged weapons, such as the Survival Bow or Crossbow. The Bard is no slouch in melee either due to its buffs, debuffs and Rapier Mastery. 2. The great move speed that Rogue had is gone. After the Agility and heavy armor changes (nerfs and move speed buffs, respectively), the Rogue was dethroned from its position as a speed demon. The Ranger also suffered in this process as they have always had similar amounts of Agility. The Bard came out on top, again, because it has move speed buffs that promptly ignore the uselessness of Agility. 3. What classes does the Rogue counter? It cannot stand up against a Fighter or Barbarian in a fight. The Rogue's abysmal magic resistance renders it vulnerable to Wizards and Warlocks. The Cleric is fairly resistant to a Rogue, due to Perseverance and overall durability. A Bard could also win against a Rogue. Rangers could lose to a Rogue if the latter closed the distance, but if that happened, the Ranger is either bad, careless or the Rogue is exceptionally sneaky. 4. The average skill level seems to have increased. This is directly unfavorable to the Rogue, because everybody knows their tricks by now. In contrast, a Barbarian for example is also predictable but still has raw power and durability. And speed. The Rogue only has a bit of speed, but none of the power and definitely none of the durability.