I used to play TM heavily. I was never bothered overly by WT's.
A few ages ago, they got weakened if memory serves correctly.
Now I am playing a lot of heavy attacker core. If I am correct, WT's need to be restored to what they used to be. It really feels just ridiculous. I remember what my success rates where back when I was running TM, and what I see now and it really was the wrong decision (imho) to weaken WT's. If you want higher success rates, fine I guess, but at least restore the damage reductions to what they were.