Ok, so some pros and cons:
+ Wacky mood - D:OS2 still has that a bit unhinged adventure charm.
+ In addition to PetPal, you now have SpiritVisions, so you can talk to the Dead.
+ You still get PetPal, so expect a lot of cool, animal-related hijinks.
+ Sir Lora. Everything about him is awesome.
+ They combat system has been changed significantly
+ Lone Wolf is a great talent for solo or dual finishing campaign
+ Cheese. Barrels of it. From summoning infinite planes of Lava and/or Deathfog, to just abusing talking to NPCs for fun and profit, to wielding highly gravitation barrels, this game has it all.
+ Skellingtons. You can become one of them. Poison heals you, life damages you. Overall a great race because - they get access to infinite lockpicks.
+ Lots of viable builds. Because of how damage is affected by attributes, it's sometimes much better to specialize in Warfare, than to specialize in respective related Spell-schools (e.g. Necromancer spell causes Physical damage, and Warfare impacts that damage way more than necromancy).
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- People dislike the current dual armor system because it favors team comps specializing in one attribute (i.e. physical or magic). They are, however, really wrong. A hybrid approach is best to approach, because sure, you might have all Physical God Team, but your opponent often come in 3000 Physical and 23 Magical, making hybrid or even semi-hybrid still the best comps.
- Debuffs only work when your respective armor reaches 0, which turns these effects from highly useful CC to a semi-useful CC. I won't argue this is a bit of a downer.
- I think Huntsman is a bit underpowered, it only gives small buff to high-ground and not much else.
- Source skills are nice but feel shoehorned in. So the difference between Source and non-Source skills is just that Source skills are a tiny smidgen stronger?