I'm curious about the people who think there should be no 'end game'. Surely after you've finished the campaign, you feel attached to your characters and would like to do more with them, no? I see no harm in area(s) that open up post-campaign with dynamic leveling or some sort of tiered content that would let you continue to grow your characters, get new crafting mats, new gear, try new builds, etc.
Of course it wouldn't be balanced, and of course your characters would get stupid powerful, but why shouldn't they when the campaign is over? There's no harm done by post-story optional content. If you don't like it, don't partake in it. Do what you would do without it and just never load the save again, it doesn't affect you at all.
I like life extension by mods, it's obviously a great and expansive option. But at this point once you've finished the campaign and killed every mob, you're done. There's no reason to load the save anymore. No reason to see those characters again. I don't know you can be so contented to see your 80+ hour characters disappear (which they effectively are since you may as well delete your save file with no mobs to fight or things to do).
