First of all, my apologies for the necro post on this topic. This is probably my very first post on these boards, but i would really like to bump this. I and i am sure many others are heavily disappointed with the 4 piece bonus we get from the TSO Armor Set. I haven't gotten my 4th piece yet and even if it dropped i am not sure i would go for it. The "bonus" for having 4 pieces just makes me sad.
It feels like a totally wasted piece of armor to me, especially when i have to give up other bonuses that are so much better. I currently use a full Set of WoE Armor and while i don't mind to drop the extra 750 HP for more Critical Mitigation for tougher mobs ( i get up to 78% with a Warden with 2 TSO and 5 WoE ) i seriously doubt i would give up any other bonus of the WoE Armor for a slightly enhanced death prevention.
I could think of so many other options to add instead of that. If our heal(s) got improved by lets say 100 or adding a cure trauma effect to our cure spells ability ( /drool ), even a little damage to whatever CA it would already feel better TO ME than the "bonus" we currently get for having 4 pieces of TSO Armor. Pretty much everything would feel better to me than that.
I personally find it sad that this issue doesn't even seem to be adressed or looked at at all and i can only hope that someone in charge will dedicate a few minutes to this and maybe realizes how useless it at this point is.
Apologies also for my english, i am not a native english speaker and i am sure someone WILL find mistakes in that post 
I just really had to post this since it has been bothering me since i first looked at the TSO Armor.
Best regards
Chilvod Bobdebobobjoe