I personally think they are releasing the Sky Tower raid far too early, considering it has a minimum level of 65 to enter, and the vast majority of players are still in the 50s, only the hardcore players can enter.
So this will unbalance PvP even more, especially battlefields. Sky Tower should have been released with other appropriate level content was release, IE - level 60 - 65 zones.
well that's not really happen in Siren (i don't know about the other server though)
but right now i already saw a lot of player reach 60 ++ or at least around 57++,
and they release it with another 2 maps (50-55) which would boost them so it easier reach 60.
Regarding the minimum level, it stated lv 60 is the requirement level not 65.