Well,so far i have completed the first 4 dungeons+explo. AC ,and i didn’t really had this problem,true that in some group where the Guardian/Warrior was specced to “Tank” build it was way easier but even with full dps groups i was able to finish it and enjoy the challenge. its all about knowing the environmental changes….“Don’t stand in the fire” (Or in GW2 world-don’t stand on the traps)is No# 1 rule in my eyes,after you get comfortable with the dodge mechanic and understand the surrounding ‘s changes it is very doable in in some cases i’d dare and say easy….
So far i think the dungeons are awesome,i really enjoy the challenge and hope the next tier of dungeons will be like that(just hit 70 so new one to explore