Not sure on what everyone else thinks but heres my 2 cents worth:
If I want to play in wolf(Bear) form and I get to winter wolf(Dire bear) I am going to shift into the better of the 2 i.e winter wolf or dire bear, which effectively leaves me with 2 feats not being used (wolf and bear)
Alternatively, if I only want to utilise fire and ice elemental and not wolf or bear, then that is effectively 4 feats lying dormant.
My suggestion would be to maybe open these up to Druid specific feats, kind of like the Arties have.
So If you wanted to only go with fire/ice ele's as a pure caster no melee, you could take extend, empower healing, augment summons etc. in place of the first 4 wildshape feats.
Will be interesting to see what the consensus will be