So, after getting into this again I will do the thing and let you all know how things have changed. I went ahead and bought all the packs I didn't have, and have been having a blast. Sometimes literally. The new intro zone blows Korthos out of the water. So much more fun in every way. Good loot. Good items. Nothing too OP, but very solid beginning. They just revamped Catacombs to great effect. No more running up and down the stairs after every goddamn dungeon. They also spread the loot out a lot so you can farm specific items instead of having to do the whole chain for a chance at Item X. You can run just about anything you want between 4 and 10. It's all good. Delera got the same revamp as Catacombs, and now has an Epic VOM for that sweet 5% xp in epic questing.
At 10 you will go to Ravenloft. It is hands down the most fun I have ever had in this game. There is one big Saga with 12 quests in 3 hubs. There are "guides" in each hub that will port you directly to the dungeon entrance for each one instead of running your ass off through shitloads of angry mobs outside. The quests are also incredible. The first one is "Welcome to new shit" and is like 2 minutes. Walk from House J to Barovia. 1 big mob and a couple extras. Kill all the scarecrows to loot the chest, which can have a named item in it. Named items at level 10 are awesome. The weapons especially. They will easily carry you up to 20. You get a free one upon zoning into Barovia and talking to a guy by the road. The rest you can buy by farming tokens that drop in chests. The 2nd quest is where you start getting the creepy factor ramped up to 11. First hub is level 10, 2nd is level 11, third is level 12.
That's as far as I have gotten so far. I rolled a pure artificer, so I can pick all the locks in N. I ran Ravenloft twice. First time on N, second on H. Lots of good BoA TR gear banked. Just started in on GH. If you bought the Ravenloft ultimate edition you got a gold certificate level 10 and level 30 pet. It has been great running around as half a full party with my pet, my scarecrow, and my hireling.
Another new thing is Inquisitve universal tree. It is amazingly easy and available to all classes. Great DPS at all times, and a lot of goodies like True Seeing thrown in for good measure.