Thing is with Battle Royal mode is that the meta is basically
>Survive the first 2 minutes while looting as much as possible
>Hide in the corners of the fog zone with a car till everyone else dies
So unless you have a gun fight with in the first few minutes you can spend upwards of 30 minutes looking for another person to shoot at because the initial fog cut off radius is gigantic and its shrink intervals are several minutes in between one another.
So by the time the map gets small enough to push players towards one another half an hour has already passed.
Sure the first few times it can be tense and fun never knowing if another player is right around the corner or behind a tree your running past etc. But it gets stale and long winded fairly fast. At least for me it did for me. I recall before I finally gave up the game I purposely parachuted towards the high traffic landing zones to seek out gun fights win or lose just because I didn't want to spend the next 30 minutes waiting since I would rather have the gun fight > Die > Queue up again lol.
Should be noted that the same cheaters who ruined the Survival Mode also play BR a lot as well
With that said i want to note my Caveat was not to buy H1Z1 if you are looking for a Zombie Survival game as Battle Royal does not offer that in that way (there is a BR mode with zombies but it sucks). And it should really be stressed that even if you buy H1Z1 when it goes F2P Battle Royal wont be free to play and will work on a ticket/game cash system.
edit:
Also the game apparently doesn't even work right now
https://www.reddit.com/r/h1z1/
edit:
As far as a Survival experience goes I think Ark would be a much better purchase.