sounds just like what
WWW.EQCLASSIC.NET is doing.
but.. how do you hardcode the teams so there isnt x-teaming? if different races couldnt group, they could still xteam. you would have to make it so you cant heal and buff other races. which wouldnt be fun. i would like to see no restrictions and have penaltys like faction loss for killing your own race and having the guards turn against you till you gain back faction with them. this way you can kill anyone if you really want but not without consequences.