Guild Wars 2

Would being able to change skills on equipment en masse when out of combat break the game, or would it improve it?

I think it would improve the game as it stands, as people would be able to make on the fly decisions before engaging in battle. It would in general make each class much more flexible and that much more dangerous, but at the same time the decisions made to change skills would reward player knowledge of the game. As we all know that utils are limited to 3 slots. Knowing what skills to use in each battle situation, instead of going in with a static build could improve the skill based aspect of the game me thinks.

If Anet would release the SDK, the mod community that would surely use it to improve the game would make a MOD that does exactly what you describe, because it’s a good idea.