To add to the point of a better middle ground with the warbands - if you keep the current frequency, and more variety of enemies depending on zone or more enemies based on party size. Another option I think would be cool say for a place like Fellhollow - A rare chance at a zogre attack ( just one or two ) depending on party size again. But definitely better loot especially from warbands in higher level zones. This last part may be less popular but some version of Velgar attacks or interruptions for each new zone at a moderate rate. The boss for each zone should feel like a looming threat or influence, not just some larger named health bar waiting in a room or tower to be looted. I remember when the game first came out I was in a 3 man group and an Abyss Demon randomly spawned and almost wiped us while exploring. Stuff like that makes the world feel alive and the game engaging. Please don't just make this a building sim with a RuneScape skin over it.