Firstly, sorry for my language, I`m not very good in English.
For now I making Full DPS Berseker Warrior for PvE and WvW, but I thinking about support warrior too (mostly for dungeons and maybe sometimes for WvW). I made two build (on paper, so probably I will have to change a lot).
First, full def banner warrior. For eq, I think about set with power/toughness/vitality. A lot of HP, def, banners and hammer for CC.
Second, shout healer, with set vitality/healing power/??? (maybe power if set like this exist). Less effective HP (less toughness) but much better healing will be helpful too.
If you know another support warrior builds, post here please. I didn`t use here another skills, but probably Endure Pain for example would be helpful too.
Shout builds work very well, I run a similar shouts build myself for PvE stuff, and sometimes for WvW also.
Banners suck. Sorry. Too small of a range; alot of fights you need to stay mobile and you and your party will be too busy kiting to worry about where you placed your banners. 95% of the time signet of rage will be the elite you’re using; warbanner is still pretty bad since the uptime on it is horrible even if you spec into banner cd reduction its like 190 sec cd+
Call me when this game gets fixed…. if it ever does….