Besides the moon druid, all other druid-subclasses hardly change.
The new conjure spells do have a large impact.

Instead of animals they are variations of spirit guardians,
A few are unbalanced, but i do get the general idea. It does help the druid to be a battlefield-controller.
What I don’t like is that they do damage on hostile turns, It forces a druid to interrupt the DM on hostile turns.
(Like the existing moonbeam and spirit guardians )

I would prefer:

AOE damage right after caster-turn, and if a a hostile enters and leaves the AOE within their turn.