Guild Wars 2

Let us have more than one build. It costs to buy a extra trait or costs to switch between them. Add more than one armor set to toggle between for those who have more than one build. Where the buttons are to toggle armor and town cloths, something like that. This could also help you save room in your bags for those players who have multiple sets of armor.

Yay or nay?

Suggested many times before.

There would definitely need to be a fee or resource-sacrifice to switch traits without the help of a trainer. (Why? Because ANet felt trainers needed to charge a fee. They decided it was important, so a fee needs to be maintained. Whether or not you agree is irrelevant.)
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Switching armor would be convenient, but I see there being complications with where the 2nd set is stored and how the game responds if some part of the set is missing; and would this account for trinkets too? What about weapons?

This leads to balance concerns for sPvP and WvW where people would be able to switch on the fly once they’re out of combat for even one second.