I would recommend maybe rolling an alt and trying the realm out for a couple of days, if that is something you might enjoy.
Not sure, because some people just transfered. A lot of people just moved to HW, but Horde is still not that full, of course. You might want to hop on one of the discords and ask there: Discords für Hydraxian Waterlords.
I sincerely hope all of them…
Nope. Not at all. That’s an issue ffor big realms, I think.