HOw is the DLC is? I din't bough the DLC
I admire what it tries to do, nonlinear campaign in a death dealing jungle, with warring factions going at it fall of the Aztecs style. The problem is that at the end the six factions or so boil down to a single big choice: Are you with the emperor or not? Disobeying him turns all the guards hostile and locks you out of a few factions, while staying with him earns you a lot of disfavour with a bunch of other factions, so the more complex faction system is a bit wasted.
The DLC has a more healthy mix of long dungeons and single even locations. It also has more alternative solutions. As an example you need to visit a prison complex and need to bailout a criminal if you side with the revolution. It is just one small map for the fort, and you can either just kill all the guards, or I used invisibility powder to sneak past them. The scripting and writing for quests also felt a bit more interesting in general.
Fights are a bit more varied, because you face way more hostile spellcasters. This also makes cataclysm difficulty unplayable as a side effect, as that difficulty doubles all incoming damage. Some of the bosses WILL oneshot your entire party on a successfull save against their empowered Insect Swarm if you play on cataclysm, so if someone really wants to beat this on cata he needs to load up on counterspell opportunities. It makes normal and scavenger better experiences tho. I still play on a hybrid difficulty between cata and scavenger, although I needed to do some finetuning for this game, decrease the enemy damage modificator because of all the unavoidable aoe spells and increase some other stuff.
There are some mild systems improvements, crafting is more fun because they got their shit together with primed items and the like, and you get actual magic loot much rarer, making your oil of sharpness +1 magical crafted weapons actual upgrades.
Overall it is a mild improvement over the base game, but the increased complexity comes with an exponential increase in bugs. Last time I checked some faction routes were still unwinnable because of critical bugs.