The next boon.
We're just about due for a new boon plot. Here are the thoughts going into choosing which plot we get.
Here is the official page that introduced the Stronghold boons.
Neverwinter: Boon Structure Guide
What we have: Barracks
Right now we have the Barracks, that we have been working so hard in recent monthes to upgrade for our power boon. This structure gives us our Power and Experience bonuses. We have one more upgrade for that structure that hopefully will be occurring in the next few weeks. At that point it will also have an Incoming Healing bonus.