Seems like a case of the tail wagging the dog. If the job balance renders a map unplayable, maybe SE should look at the job balance rather than further limiting playing options by axing a map.
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One thing I see to balance is the too long invincibility buffs uptime. When some enemy is running into your group, dancing the Marimba around you for some time and leave unscathed isn't great, when on your side you dare to use something so OP as Guard and get punished with 1/4-speed debuff (= you dead) for an eternity so you will think twice to use it again XD
It is also appropriate to say here that the old maps did not fit the new skills. Although we should not forget that in the old PVP there were 2 additional skills on tanks, for knockback and pulling up one enemy, so instant deaths were cases even in the old balance, although not on such a scale.
But I hope they will return soon Borderland and it wont be so awful like new Shatter...