I still think VR's killer app is fitness. So definitely not sitting or lying down, but maybe stuck in place (since you can't really run around inside) like an aerobics class. I've never experienced motion sickness, but with BeatSaber you are just standing while the blocks come at you, and while you move around a little bit, it isn't like a roller coaster.

Reclining...why would you want to do that? It sounds like a huge step back, just give me a Switch at that point.