I have no clue what's being included in the list of druid spells for the expansion, but I'd like to put in a few words for the following, with acrobats in mind:
Shillelagh - I think this would have to drop the nonmagical clause for it to be of any use in DDO, but a base damage upgrade for what's already weak weapon choices would be nice.
Brambles and Spikes - If these two are included you will make my future acrobat/druid really really happy. (+1 enhancement bonus to damage/CL max 10, +1 enh to attack (+2 on spikes), and brambles adds in a keen/impact effect. Only on weapons with wooden striking surfaces)