All kind of spam or meta builds(of every class) must be nerfed for pvp to encourage build variation and new play styles. I play mostly tpvp, and almost every player uses the same meta build of their class. Almost all warriors are hambow, all thieves are perma evade, all mesmers are pu, all necros are mm, all rangers are spirit, all engis are p/s etc. (ofc there are some original players) This is so monotone, we want to see some personalized build variety in pvp. All players are like copy/paste of each other currently.
Why players prefer these meta builds ? Because these are easier to use and has much more damage output/defensive countermeasures compared to other builds.
What can be made ? All of these builds has the same thing in common, spamming.
You can increase internal cooldowns of their effective abilities to prevent these effects to be spammed. For example: ccs, pet spawning, stealth, evade etc.
New metas will always continue to show up, this can’t be one-time process.