Let's see point by point:
Block: Block reduces regular attacks but crits still get through, with how insane critical damage is (we tried to fix that, nobody was willing to give up their easily earned crit damage) without block tanks are useless against rogues, which shouldn't be the case. See below for the continued point.
Physical Defense: You're talking about non-edited players vs edited players (mind you the current item level cap is 135 and when level 150 opens up this won't be an issue, if the level cap was also 135 this wouldn't be an issue either) so if we nerf this what happens to non-edited tanks, which is 95% of the population?
Protection Aura: I agree this skill is overpowered and will get a look at in the future.
Casting Foil: this is the first time I hear about it not removing stealth, because it should.
Solid Shield: @Jonah that seems so much more complicated than a simpler solution which would be lower the block rate given and add a -Phys ATK debuff that comes with the buff. Trade more block for less damage.
A thing I would like to point out; it is really disappointing that our community only wishes to report bugs after it annoyed them too much and not the first time they encounter it.