Content should be challenging to execute... Not challenging to learn

[Nektulos-Tuor]

I agree 100%, that is why coils and such were boring. They are more of a memory test then anything else, that is why I am glad to see things like the randomness in the new trials for example.

We need a mob that does different things each time you fight them. There should be random encounters that appear in random times.

Dark Souls type encounters would be a lot more fun, you should be able to avoid what the boss does, however you shouldn't be able to predict what he does.