lol - I can't make up my mind on limited versus unlimited. In EU I always used unlimited - but I started out back when it was PE and everyone used unlimited. In AW everything is limited, but repairable a set number of times - like a number of lives.
I love the idea of really rare loots containing unlimited items but not sure it helps the economy, and over time I think it might devalue the crafting profession. But I still want cool items in my loot - not just components for crafting, as there's no excitement then. You could have a system were unlimited items required a repair kit that had to be crafted - that way crafting would still be needed even for unlimited items. Or some guns are crafted and some are only looted.
Unlimited items would only really effect the market if they were more common I think - if they are super rare then most people still rely on limited items and the market won't really move much. My gut feeling is that there won't be any unlimited items - but of course only Jelle and John know for sure (maybe they will pop in and tell us
Crafting is a whole different thing though - it so complex to balance I don't envy the devs at all. But I think that miners will become more important for sure. That's way harder to skill up than hunting at the moment - so I think there may be less skilled miners out there. They might do really well when crafting comes in.
It's exciting though as its all unknown and fun to speculate.