Looks really fun! At first I was surprised not to see Mirror or Elven Light but once I saw what you were up to I don't know what you would take out for them. Next time I'm on OCTGN I'll give it a go!
Would it be worth the effort to make room for Gandalf?
I mentioned that In the deck description. I went with keen as lances for purely thematic reasons but if I was optimizing the deck I'd replace them with Gandalf.
I should mention after more place-testing I found the steward/good harvest cards unnecessary. I had too many resources all the time so I got rid of those 6 cards and added glorfindel ally, light of valinor, 3 northern trackers and a galadrim's greeting.
Just took it for a spin against Across the Ettenmoors. Absolutely crushed it! Tons of resources, allies ramped up quickly, threat was super low the whole time. I think I finished the game will most of my allies on the table and threat at 11. Tons of fun. Thanks again for sharing!