You're dreaming if you think that's happening any time soon! Plenty of core stuff they need to fix ahead of that, plus it would be an absolute minefield to get that working and have enough people online committed to cleanly playing a full hour or so service without messing it up for everyone else. I'm forever pausing my game for snacks/toilet breaks/fetching a drink/answering the phone - instead I'd just have to leave it running and have everyone else on the server waiting at reds for me!