I too registered on this forum just to say that I really want split screen on PC. I, and many PC gamers like me, use Steam Link to stream PC games to a big TV for gaming purposes. The PC split screen experience is improving, but the dearth of couch coop games on PC indicates developers' support is lagging behind the customers' desire for such games. Adding split screen to DST would be a distinguishing feature for Don't starve, boosting its sales.
My wife really loves Don't Starve and Don't Starve Together. We even bought and installed two copies of DST on different computers in the house, but it would improve the experience if we could sit side by side staring at the same screen. She doesn't like many games, but this is one that we really want to play together. It would be infinitely easier if we could play on a single split screen.
Thanks for your attention, developers!