This totem idea has merit.
The issues seem to lie around wildshape/natural spell/animal companions.
The totems could resolve all these issues.
They could determine what animals etc you may turn into, what spells you could cast in wildshape and what companions you can choose in a similar style to cleric domains.
Perhaps you start with 1 (or maybe 2) totem(s) and get one every 5 levels for example. When high enough for flying/elemental forms a selection of those totems become available.
e.g. for flight choose from owl/eagle/raven totems
e.g. for elemental choose fire/air/water/earth
Again for these maybe you get another choice in 5 levels or so.
In this way no two druids will be exactly alike and you can style your character to the totems that suit your playing style.