The new troll rewards system is very nice, though the most expensive "Smith" option is rarely useful for armor.
The player can have the Blacksmith smith 3 items for them. They always get to choose from 2 random weapons and a random armor generated using Dwarven Metropolis tier distribution. The items have 15%/55%/20%/5% chance to be upgraded to +0/+1/+2/+3 respectively and are never enchanted or cursed.
At this stage of the game we are usually looking forward to a plate armor, and may have one at +0/+1. Often enough we can upgrade and reforge for 1500 favor and come out with +2/+3 plate.
Now the Smith option, for 2000, has a low chance of producing such an armor and often only produces a Scale mail, rarely a novelty at the troll's level.
Perhaps the armor item should be guaranteed to be a plate?
I feel the same way. I've no use for scale mail, I've observed I just die in the next area without plate. I prefer to just keep my chainmail at that point and cash out for gold in the hopes that I find plate at the shop.
The shop spawns for weapons and armor are completely pre-determined when to comes to tier. You'll only ever find plate on the floor 20 shop.