I'd definitely encourage you to keep the druid. More options as others have noted and the macros aren't that bad to take care of eclipse on the boomkin. If you are running instances for loot, you'll have one less full toon waiting for mail caster drops (that can be a big deal).

As for specs, I've looked around a lot and think I have pretty good ones on my toons. For examples you can check out Pantero for ele shaman, Conifer for boomkin, and either Windcow or Blazecow should be in resto shammy spec atm (they both dual spec, but I think I logged at least one of them off in resto). All these toons are in armory US Magtheridon.

Hope that helps.