I tried something like liveview way back in the day (10 or 15 years ago) and latency was the killer. It’s probably much better these days with 5G and more efficient refreshing (we did full page refreshes, IIRC). But this is still the reason I won’t use liveview or an equivalent. If you do run into latency issues, you’re in for a world of pain if your entire application is architected incorrectly.