I don't think, that variety has to be expensive. There are a lot of nice looking armor models already in game, just not for our PC. I for example love Kaghas armor very much and some of the armor, that looks more like clothing, some of the tieflings wear. Give some dye options and some variants of existing armor and it would be a lot better.
Even for the more exclusive taste like that guy, that looked like the Loviathar priest, you have already armor models. So I'm theory a lot of different models for different tastes are already in the game, just not necessarily for the player.

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