On the one hand, the AI of the enemies have been significantly improved, which usually means trouble for the party's monk or wizard. The enemies more often target the support characters and they cannot be easily diverted by a melee fight. Thus the more significant role of all the skills that slow the enemies down, immbolize them, or summon the creatures that can hopefully engage the opponents in a close combat. On the other hand, stealth finally works as it should. From now on, every character hides "on their own" - spotting of a clumsy paladin does not mean that an agile rogue will also leave its cover of darkness. This solution works as a great convenience for the player - you can gradually "start up" packs of enemies (works best with the rogue's animal companion), and then separate them into smaller groups that are easier to defeat.