I would LOVE to see a few Orthodox works included. I know the Orthodox aren't a HUGE demographic, but I have to think some of our materials would be of interest to non-Orthodox, at least from an academic standpoint, and to Catholics from, perhaps, a more than academic standpoint.
I'm thinking of things like The Philokalia, Evergetinos, Sayings of the Desert Fathers, to name a few that go back to before there were any of these divisions (Protestant, Catholic, Orthodox). They have all been translated into English, but having them in both English and the original would be absolutely awesome! And more recently, there are some excellent dogmatic works in English (by such people as Lossky, Staniloae, Harakas, etc.) and some great works on asceticism by St Theophan the Recluse and others, and also, The Way of the Pilgrim.
Please help us poor humble Orthodox out. 