In abit of a bind in terms of character direction.

So, so far ive played a DK, Templar and a Nightblade. All of them have pros and cons, and that is something i can live with, however with the main theme beeing "everyone can do everything" it frustrates me to no end when i get the boot from a group because i dont adhere to class X has playstyle Y. At no fault of my performance mind you.

And it is all very.. Offputting and leaves me unhappy with my character directions that i am forced into.

What can i do?