Welp, I finished the game a second time, and here are my insights. I doubt anyone of Larian actually reads this, but perhaps they do and it proves useful...
Let me start by saying that, if it weren't for Sir Lora and the loading screen, I wouldn't even know this is a "definitive edition". I thought it was going to be like the Enhanced Edition. I'm so naive sometimes. I made another thread during my first playthrough:
http://larian.com/forums/ubbthreads.php?ubb=showflat&Number=638931#Post638931. Every single problem adressed there is still present in the DE, so it's pointless to discuss them again.
WARNING: SPOILERS AHEAD!BUGS
Oh boy, DE has plenty of them. How the hell things that worked before now are broken is beyond me. I don't recall them all but the firsts bugs that come to my mind are the following:
* Sebille not giving me her Scar Song, forcing me to cheese the fight against the Shadow Prince by approaching without her anywhere near the place. And yes, I had 100 Attitude with her, it seems like you have to talk to her first when Act 3 starts, otherwise it bugs out.
* My inventory getting greyed out, like when it does when you're talking, but pemanently. Only resolved by reloading, and it happened like ten times.
* Random crashes, I had like three.
* At the end of the game, Sebille told me how special she felt when we slept together. It was funny because we never did, I chose Lohse this time.
* Toymaker Sander had a mental breakdown after I tried to sneak into his house. One of his puppets saw me, started to scream, and he came into the room, not before I hid myself again. He just stood in the door saying something like "it seems like it was a false alarm" over and over, he never moved from that position. At least it allowed me to keep talking to him and proceed with the quest.
* Random quests are broken, like Count Your Chickens.
GAMEPLAY
The cheeseness is strong as always. Many fights require you to had previous knowledge of it beforehand unless you want to be instantly fried by Source spells before you can even react. The constant browsing of shops is still there, and still shitty. This time I played the game without stealing from vendors, and it was pure hell. It wasn't until Arx that I had enough money to buy anything I wanted.
I had a problem that didn't found during my first playthrough. While it was probably an epic fail of my part, I seriously don't know what I did wrong. What happened? I couldn't find more experience in Arx, and was stuck at lvl18. Pretty much every fight was lvl19 and onwards, and in Tactician is nearly impossible to beat let's say Isbeil at that lvl. It took me a great deal of time but I eventually managed to level up to 19 by killing the traitor dwarf at the wedding and doing some other random stuff, after that everything went smooth.
The weird part is that I actually completed plenty more quests than my first time. In fact, I obtained a lot of new achievements, and yet I ended up being weaker. Was the experience nerfed somehow?
CHANGES
According to the changelog, the game had a huge rework in terms of dialogs and texts. I honestly couldn't find anything different, maybe they were way too subtle. To be honest I never had any issues with Arx, many people said it was lifeless but I thought it was ok.
I only encountered a single new fight, perhaps two. They weren't very exciting. The Kraken fight was beyond stupid, the tentacles couldn't reach me at all and I just shot them to death with Ifan from across the screen.
The epilogues are still the same and have no mention of your romance with the rest of the characters. Every single ending my friends did the exact same thing, how exciting. Why not add something different?
SIR LORA
Dear God, why? At first I hated the squirrel because it was nearly impossible to keep him alive, specially in fights like Blackpits. Eventually they added magic armor to him, which was a step in the right direction, but he eventually managed to die by stepping into lava during the fight against the remaining gods.
I kinda grew fond to him after that fight, where he told me about his past. I don't know, something about the way he said "they killed him... my friend" gave me shivers.
I'm sorry Sir Lora, I failed you and allowed you to die. We did stopped the Great Acorn tho!
In all seriousness, he should've just been invulnerable, untargeteable, or a summon like the Black Cat or Vulture, instead of having to look out after him. It's annoying and provides nothing but headaches. And feels.
BALANCE
I haven't noticed anything different regarding armor or power of certain spells. In fact, it felt exactly the same - sometimes extremely cheap, sometimes extremely easy. I actually killed the Doctor in my first try this time, when the first time I played it took me like ten reloads. On the other hand, Isbeil took me like three reloads because every time she went first, had 6AP, and melted my whole party with Source spells.
CONCLUSION
I just reinstalled DOS1:EE and started a new game. It's amazing how superior that game is. Like, 99% of its features are better than the sequel's. How did that happened? If DOS3 is on the way just copy the first one and forget about this mistake, please.
Welp, that's all for now. Sorry if I sound too agressive, but this game has an unique way of pissing me off. Frustation is a word that describes it perfectly.