One of the things I always find a little hilariously tragic about most games that claim to diversify their players is that, while all the armor and weapons and gear in general is diverse, it tends to have its own cemented stats. For example, say you like your starting armor for the most part. Well sooner or later you're going to have to ditch it for the better stuff. If you want to contend with the later levels of the game you're going to have to dawn the Blazer of Awkwardness and Jeans of Casual Wear somewhere down the road so you're not being murdered almost effortlessly. However, if the armors themselves have customization in the form of modification you could see an end to that, at least in Destiny. Granted, I'm going to assume there's still base stats to armors, but modifications could still allow one to dawn whatever cape, helmet, or lucky slippers one wants. Because, well, you know if the armors are locked in stats everyone's going to prance about in the highest rated Blazers. What do yins think?
I think they could partially solve this by treating armor in a horizontal fashion. Like, no armor is really "better" than another, but they serve different play styles. The problem is that I know that I would eventually run into an armor that looks awesome, but doesn't serve my purposes very well.