Limiting the amount of Dukes the trader has, is a good idea, expressly for the min/maxers in the group.
I would think A19 loot is still game-stage based and the trader has a loot bonus of some level.
Hoards will be used as a sink for your excess ammo and gear still.
So finding rapid ways to level as well as reducing the "Expense" of surviving will be the thing for me.
I actually like game-staged loot as you cant end the game early.
What MIGHT be better is location based loot, right now tier 5 POI's are a waste of time as you can get the same loot easier in other POI's.
Tier 5 POI's SHOULD have a huge bonus to games-stage loot and enemies..
***Edit: What would be great, would be to add Screamers to the Level 5 POI's!!!
Can you imagine, you carefully cleared out your escape route, when you fail to kill a screamer fast enough and now there are high level zombies|: above, below and behind you! OMG that would make T5 POI's THE THING!