Good concept, i like games about resource management and this is going in the right direction because it have charm, I mean, why everybody is selling arms and legs?, no wonder why he wanna retire.
I would say that go full Diablo style equipment, make the bodyguards have helmet, weapons, rings, boots, belt. So the game become about trading in dangerous places, and for that, you keep upgrading your bodyguards.
I like the shopkeepers having face portrait and animations, I think in the future you should make a unique shopkeeper per city, that will give more identity to each of them.
Keep the good work