I love how this forum is showcasing the inability of people of going over their own personal and limited (because is personal) point of view.
Most of the times just watching something from a single point of view.
I hate levels but not because it makes me feel wowed because my main toon has killed whoever it is. (by the way congrats if you are so skilled to go through the game getting easily rid of any mob you encouter). In my playthrough it was frustrating to see level one mobs killing my party over and over (not only i'm not awesomily skilled but I have a lot of bad luck when it comes to dice rolls, give a game of pure strategy and whether I try until I get the right one or i datamine the internet to find the best strategy to use, give me dice rolls and I will have to reload times and times again until I get not so many critical misses lined up).
Also I, and I'm pretty sure that the bigger part of players side with me, want to have fun, not to apply the same efforts and energies I put on my work, my social life, my chores in my house.
Furthermore maybe I was distracted but I didn't noticed the fact that the levels were always present I had the impression they appeared after you engaged (willingly or by bad luck) the mobs.
Again what Larian could do is add more options in the Gameplay tab so that players can personalize the difficulty, that is addinf options for level tags, fog of war, hitpoints, xp gained, switch of/on advantage/disadvantage for heights and stealth, and number of oil/firewine/grease/water barrels accessible.
This way the game would be able to satisfy both players who want it to be hard and those who want it to be moderate or easy (I love RPG for the story not for the realistic coherence or the battles, that is why I usually play choosing story or easy difficulty).
On the mindfliers I was able to kill the one in the nautiloid, and found that quite weird, ok the him was fighting the demon lord, that I bombed him with the nautiloid barrels, that I procrastinated the battle to allow enough fire damage, still it was weird, the other nautiloid well him was at the edge of death.
Other level 3-4 I met I wasn't able to kill even using barrels and surprise attacks, the minotaurs killed my party many times, the Girth leader tooke damege from an ambush but still was able to run, and his lieutenant gave my party an hard time.
I have a question: what happened to the storyline? If you kill the dragon the Girth can not use it to flee away thus it became possible to kill it. (One of the reasons why I think it's an error or something the programmers didn't considered).