Well actually im pretty sure Nara is one of our tanks, if we have 4 regular tanks i think its enough to ensure raids each week, with less tanks it will be very hard if people are busy have rl stuff etc.
Remember Elre will still have some problems in availability due to his irregular work, also Maive has a hard time making our raids during the week since the big time difference. So 4 regular tanks is a minimum i think, unless some people will drop out of school or quit there work to play more wow wich i hope wont happen
As far as retri pallis go imo, theyre pretty much useless in raids except for there buffs, altho i did read some stuff will be changed for this class where they would become more viable in raids.
The few pallis i saw put out decent damage ussually had big agro management problems. But im curious about what they wil change for them.