Jokes about obscure video games aside, this is the straw that will probably break my back. At this point I've dragged literally dozens of new players into the game of Dungeons & Dragons using, primarily, a synopsis of the Eberron campaign setting. I don't know even know how much brand loyalty I'd still have towards D&D at all if (a) not for Eberron and (b) new players want to play D&D and not <insert literally any other game here> because it's the one everyone's heard about. But that's been enough, really. A lot of the issues that have plagued Dungeons & Dragons from a thematic and ethical standpoint (to say nothing of how these issues have plagued our poor overworked moderators anytime anybody mentions the word "orc") were solved by Keith and company nearly twenty years ago. Their sensibilities helped keep D&D relevant for me and the people in my life. I grew up with D&D, but Eberron is what kept with it after I, well, grew up.
Eberron without Keith Baker isn't Eberron. And D&D without Eberron is a whole lot less appealing to me in general