First of all I'm new here, so hello everybody and thanks for your work! I discovered this project just 2 weeks ago and i'm currently enjoying Morroblivion :D
I decided to open this topic to discuss about the (in)famous "essential" flag that Oblivion introducted. I always kinda disliked it, not because i want to go around killing everyone but because i think it is a solid limit to the freedom of TES. Example (imaginary situation):If i'm an assassin and someone assist to one of my crimes i would want to kill that witness. Unfortunately a long time ago that guy gave me a spoon that was important for a stupid side quest, so now it is immortal and he's like "Buck you Nerevarine, i gave you that spoon". It's quite mood-breaking.
Now, i know that Morroblivion is not Morrowind, so my question is: why the decision to keep the "essential" system and not to introduce a "fail quest" option for killing important npcs? Are there good sides that i don't know? Is this "fail quest system" difficult to implement with the construction set/creation kit?
I really don't want to sound annoying, i respect your hard work for this mod! It's just that i really don't like this "essential flag". You can see in Skyrim how many immortal NPCs there are, the situation is getting worse!
p.s. uh, I'm not english so there are probably a few grammar mistakes :D

Essential
The essential flags are on set Quest related npc to Make shore they do not Dissapear and they are with in reason of the location they need to
Near shore there is an artical here i think it won of Dave B explaned