So I tested Druid/Rogue in rofl today and I see 2 problems this class has.
1) The damage of "Earth Arrow" is really low. Even though it hits 2 times the damage is really not that high, so most of the time it's not really worth using, unless you can't use anything else.
2) Energy Costs. Well, your main damage skill "Poisonous Widow Embrace" costs 30 Energy, your aoe skill costs 20 Energy. Even WITH experimental dwarven ale (eda) you run out of Energy really fast during a boss fight, because you loose 60 Energy per second while only gaining 15. Without eda it's nearly impossible to compete with other classes since you are out of Energy almost all the time or have to revert to use Earth Arrow (see Problem 1).
Another suggestion, that has already been asked a few times if I remember correctly, would be if it was possible to implement a magical heal hammer. The last one is from Tikal, if memorie serves, and since you already implemented magical xbow, 2h sword and dagger I was wondering if a hammer is planned as well. This is usefull for heals and mdps that want to play this class alike.
Anyway these are just some impressions I get after testing this class for a short while.
Greetings.