I've long resisted Spinoza's charms, since he was he has so often been contrasted (always favorably!) with Leibniz, my dissertation subject, but there is a nerdy "charisma" to him, as one student presenter put it today. Pantheologies gives pride of place to Spinoza, too. In what she calls a "faithful betrayal," Rubenstein argues that the pantheistic view Spinoza lays out is more pluralistic than he could imagine, given 17th century science. I'm (so far) resisting the temptation to say that if you want a pluralist Spinoza you need look no farther than Leibniz.
But isn't Leibniz in the American philosophical canon in part because William James - another star of Pantheologies - thought he offered a pluralistic alternative to the Spinozan monism of Josiah Royce? (That claim, made in an essay by Bruce Kuklick called "Seven thinkers and how they grew," was the basis of the last class I taught in which Spinoza came up, "Spinoza, Leibniz, Royce and James," in a different life long ago.) I'm not quite ready to trot out the "Monadology," but Leibniz' - quite Spinozan - theory of the "striving possibles" seems like something Rubenstein's "hypothetical pluralist pantheist" might like.