Do projectors have less eye strain? That's quite intriguing if so. What if you had a front-projector projecting on an e-ink screen, such that various parts of the screen could be in color/motion mode (e-ink off, projector only), mixed mode (e-ink on, with color overlay for syntax highlighting or the like), or ink only (projector off). That seems like something that's doable with off-the shelf components and software, at least as a POC...