Here is some info on several classes and base rolls. top DPS = sorc/ bright wizard, Burst dps = witch elf/ witch hunter
Many people do play chosen, but most are low lvl and do not twist. They cna twist their auras much like the paladin in DAOC, using this will make them very useful in a group.
This is RvR, many people in low lvls play like in wow battle grounds ( no coordination at all), later on you will see more rvr aspects and guild groups.
Most of the weakness and strengths are going to change drastically being new release.