Follower of the Way
Wonder how much you could tap into Sid Meyer's Alpha Centauri for this sort of thing. Orcs as psionic avengers is definitely a different take, and could be interesting. Especially if they can continue to exist as independent entities after the "planet" grumbling recedes. Maybe lift some ideas from the less-popular but similar 4e race, Wilden. Half-orcs could then be common as druids, shamans, etc. due to druid-leaning human communities welcoming orcs among their number as a sign of nature's direct and overt favor; being a half-orc would then in some sense make you a "child of nature itself."The take on Orcs -- that they're almost literally the planet's reaction to pollution and overuse -- is also something I've not seen before.
Food for thought, at least.