The thief backstab burst is not effected by your advice. Your advice requires some form of reaction time.
I remember this one thief. I was going up this hill in WvW and he was at the top of the hill and alone. I thought, ok, I’m ready, let’s do this. So I started moving towards him and he was looking right at me. I knew he saw me and I knew he knew I saw him. Suddenly, he disappears and my initial thought is “where did he go”. Unfortunately, that was also my last thought before I saw the downed state. Three hits (steal, cnd, backstab) downed. I’m not tanky but it was a real kick in the pants. Even if I had gone more tanky (which is only about 400 more toughness anyway) he would have finished me with 2 heartseekers.
The problem is, you don’t have time to react before you are downed. Even if you do a preemptive dodge, he can just wait for your dodge to end and then pop you. No venom needed. No stunbreaker needed. It was… ok, let’s fight.. dead. Seriously.
So your advice, does not fix the problem. I don’t have a problem fighting thieves 1v1 when they are not specced like this. Sometimes I win, sometimes they do. But a burst backstab build is ridiculous.
So… while your advice has been said before, it does not fix the problem. Thieves are not broken. There is a particular build of the thief that is.
And to respond to the whole toughness/vitality opinion, my toughness and vitality are fine in 1v1 and 1v2 (outnumbered) against all other classes including warriors. So why should I have to downgrade all of my other abilities just so I can counter a cheap trick that probably would not be negated by doing so anyway? Logic is flawed.