I built this to go with grant12000's Duo Hunters (Haldir and core set Legolas) deck that is currently unpublished. It was meant for King's Quest, but I ended up using a different version. Still this seems to be a solid defense and questing support deck.
Lots of readying for Beregond to defend multiple times with Unexpected Courage, Behind Strong Walls, and Desperate Defense.
Bilbo and Eowyn there for strong early questing power. Low cost questing allies to pump them out without needing resource acceleration.
Plenty of Threat reduction from Beregond, Double Back, and Galadhrim's Greeting.
Each hero has another version that can use Thorongil. Lore Bilbo is nice for the card draw. In scenarios with a boss enemy Eowyn is the better choice. Not sure that using it for Tactics Beregond is a good idea, but it is an option.