Maybe I'm an anomaly but, If I get killed by one of the aforementioned 'one shot mesmers, unkilable rangers, runaway warriors, one shot thiefs or dodging forever ones while dealling damage', my first thought is what can I do differently? It's extremely rare that I will rage. I will rez, track down the same opponent, and try again. It's very possible I die over and over again, have my dead body jumped on while I check the dmg logs, and become a bag vending machine. However, I will not be discouraged. At no point will I analyze the situation in a way that the game has pigeon-holed me with an inherent disadvantage and the only solution is to handicap everything else so that I gain the upper hand. Instead, I welcome the challenge, analyze my own performance, and make some changes. Some encounters are more difficult and tedious than others but, I feel that is to be expected and there is no problem with this - some classes, mechanically, will counter others. Long story short, the rift between class balance might not be as big as you think.