There will be spoilers in this post.
So, after playing D2:ED for a while, than buying DKS, I thought I may come back on what changes I found, what I thought about it and all, me being the best and only reliable critic in the world (and my ego is like a dragon one)

First things first, I was actually surprised at how quickly I reach level4, which I believe is a good thing, as in my first game of D2:ED, I got a huge XP debt, and it was very painfull to get to level2 (Arben's ghost handed my haeed back to me quite a few times before I decided to come back later). So a much better start.
Didn't find many differences later on, until I reached the flying fortresses. In broken valley, Sergents are a bit too powerfull compared to other mobs, their whirlwind attack dealt loads of damage, quite unbalanced compared to damage from anything else. Reaching the flying fortresses, I had a blast.
"Redesigned", huh ? More like trashed and remade from scratch. And I loved them. It was hard (I'll go back over this), but it was fully enjoyable, needing to hide behind walls to dodge missiles and arrows, and opposite to the first version, I never got bored (but I got killed many times).
Some talk about balance. The damage charms for weapons are powerfull (too powerfull), and in nightmare mode, needed to succeed, at least in close combat (I deal all damage in close combat).
Stun, I realised, is too powerfull. Damage should end stun, as I realised that in nightmare mode, ennemies can deal you more than 1000 damage in 2 seconds (or even in 1 second). Especially if you play as close combat fighter. If you are stunned, you can't dodge, you can't drink potions or anything (and if you are not stunned, it's already hard enough). I had to try the fight with the Divine and Zandalor quite a few times, because being stunned meant waiting for my character to die.
I also found there ware too many sets, that made other pieces of equipment just placeholders until you can get your full set, whereas in D2:EG, I got slightly more powerfull without using sets.
Now I'm just starting FoV part, loved the Terminator start, and ready to have fun once I finish this post (the demon being called "Berlin" is a joke or not ?).