I understand why people are asking for this, I don't understand what they think it will fix. If you visit the PvP sub-forum here, you can see that they are just as unhappy with balance as we are. The difference is that WvW does not take place on very small maps with a node capturing objective. Capturing and defending is a part of WvW yes, but it is not at all the same. Builds are not balanced with consideration for their strength on a node with a radius of 240 and much of the time players will not be restricted to a small area.
Adding the Amulet system will not remove the ability for professions like Thieves, Mesmers, Rangers, etc. to be extremely mobile and difficult to pin down. It will not stop players from using 1 shot gimmick builds. It will not stop players from zerging or ganking. And it will not make many of the worst offending builds any less broken.
Although stats would be greatly reduced and builds would be more streamlined, there are still a variety of builds in PvP that are problematic for average players, which the vast majority of WvW players are. And when you realize that most of the PvP Amulets are designed to prevent players from being too durable, it means the percentage of players with high defenses in their builds would greatly decrease and thus people would be dying just as quickly as they do right now.
I therefore do not believe it will resolve anything.
I feel like many of the people who have requested this change haven't thought it entirely through so I felt like putting it in to perspective. Typically I wouldn't start a thread to voice my thoughts as I'd prefer to keep it to individual comments where it's less bothersome but, with the recent "announcement for WvW', I've become a little paranoid for what's to come...
[CAT] [Blep] [HUNT] | Necromancer, Ranger, Warrior, Engineer, Revenant | Kaineng | Diamond Legend
I wanna dance all night with you ... ♫