One of the Druid's key features is currently missing in-game: the ability to manipulate spells while in Wild Shape.
To be clear, in 5th edition D&D a Druid cannot cast spells while in Wild Shape (until level 18 but that is very far off), but can manipulate them. This includes things like moving Moonbeam as an action or using the lightning bolts from Call Lightning as an action.
The spell must be cast before entering Wild Shape, but then, assuming the spell is still going and grants options for doing something with it, the Druid can still use those options while transformed.

I would absolutely love for this to be implemented. It allows for immensely fun combinations like flying around the battlefield as a Raven while raining lightning bolts down with Call Lightning.
This also applies to more practical things like moving your Flaming Sphere to one group of enemies while you engage another (thus not getting damaged by your own spell in the process).
Let me become the thunderbird, Larian. I desperately need it.

--DubTak