One of the most needed classes ever, EE, learns its main buff at 58 lvl only. Untill 58 its usless in popular random pt's. Its only 1 example that u need to put alot of painy effort to play not mainstream chars. But everything has its price, and u always have a choice. I had big expirience playing rare classes like SR and TK, with even taking hero on them, but every time it was finishing by swapping to some important, popular class for good cp. La2 for me it is about teamwork)