nnms
First Post
So would advocate for a mixed approach?
If mixed means that monsters aren't more defined by their role than by their fictional details, then yes.
One of the things that burned me out of DMing D&D was the sameness of monsters.
One of my players asked me why I was the one who got burned out when I had all sort of opportunities to constantly be trying out new monsters all the time. I told them that there were basically only a few different monster types with slight variations and it got boring.
I guess it's like the leveling math for players. If they don't stop and think about how the monster defenses seem to go up at the exact same rate as their attack bonuses or how skill DCs seem to scale at the exact same rate as their half level bonuses, they fall for the illusion that leveling up means that they are getting more powerful when they are actually not.
4E monsters may appear to be different and unique to players as they fall for that same illusion. But once you've seen through it, you can't go back.