I don't know, they've always been the nature priest type druid in my campaigns, very secretive so no one really knows anything about them or how they work, really. Most players IME run them like clerics that can shapechange, which seems to work OK. My problem, as printed (or as I've seen as printed played), is that they really only shine as a caster...ok at combat, ok at healing, ok at most things, but not great at anything and with a lot of limitations that don't make immediate sense.
I considered changing up to Terry Brooks' style Shanarra druids when 3.0 launched, but the current version can fall close to that without a rewrite given the available player options
Spell Compedium adds a lot of (powerful) druid spells, worth checking out if you are going to play one, especially at higher levels. Setting materials also seem to hide some druid goodness, I seem to remember the forgotten realms had some people crying that druids were broken or would be if not banned.