One of the things you have to accept about multiboxing is that you are always going to be missing out on certain micromanagement which would result in more DPS in most cases, so being okay with a certain level of inefficiency is important. However, I don't feel that the damage buffs shaman are getting will make up for the stacking nerfs because I'm always going to be bothered that a different class could be giving out 3 new buffs and debuffs that the shaman can't. That's why I quickly moved on to a totally mixed caster team. I'm now getting fort, mark, int, kings and thorns, a future COE effect from the druid and a 1 minute AOE dmg buff from the mage, crit chance increase from scorch, etc. However, I won't have 4 grounding totems to nullify casters, and tremors won't be quite as good with just 1. In any case, if you have 1.5 months of RAF, level up more classes if it bothers you. There's no rush. You have years of WOTLK to play with.