I'm fine with the option of RTWP as well, but I certainly would never play it. I'm not opposed to them adding RTWP if they have the budget for it for people who love it. I, personally, would go from loving this game to not loving this game if they exclusively made it RTWP. That's all I'm saying.
AND... if it was add RTWP or Day/Night Cycle and weather conditions? I'd pick Day/Night Cycle and weather conditions... that's where I'm coming from.
I'd put 6-person party over RTWP as an option on my end.