Something else I forgot to mention from my last way-too-long-post.
Healing other people is hard. Healing power, while it has some party support potential thanks to things like Regeneration, is a stat that only scales well when you're constantly healing yourself (at least two skills/traits beyond your healing skill). Healing Power and Boon Duration (depending on the boons your class can get) are your active ways of supporting yourself, while Toughness and Vitality are your passive ways.
The good news is that every class has at least one trait that can be used to heal others consistently. What I dislike is that that trait is usually buried so deep in a trait line, often a Grandmaster Major trait. Which means if you build towards that type of active support playstyle, you have fewer points to use to find things synergistic with that trait, and those synergistic traits are usually in the other defense or support trait line, which is then part of the whole damn reason we get bunker builds up the wazoo. The same thing happens on the flip side, where the two offensive trait lines have too much synergy, causing people to often go for burst builds. Dammit ANet.
And another thing. I understand that PvP has it's own strict balance and so allowing certain stat setups from PvE is dangerous, but at the very least allow every stat setup from PvP to be in the other modes. Why the hell don't we have the same PvP Knights (Vitality/P/Pr) in PvE/WvW? Why did it take until the grossly expensive Apocathery to get PvP Shamans (Toughness/Cond/Heal)? And why did you go and split up these names in the first damn place and cause confusion across the player base? At the very least, rename PvP Shaman and PvP Knight to their PvE counterparts to keep consistency.
There's too much about this game that makes you want to make a build specifically for each mode. That would be great if you were playing only one class, but builds can have fine points that are just dissimilar enough that instead of having to remember 8 classes, I'd feel like I was remembering 24.
This turned into a rant, and I had to delete the paragraph on Giver's armor.