The bandaid measure to "fix" the archer assist makes solo archers completely useless in keep fights. In a giant radius around the tank, while sitting in the ram, he protects all group members with a 46% block chance in my case. Meaning I have a nearly 50/50 chance for any arrow to get blocked, this includes crit shots.
This mechanic makes archers playing solo completely obsolete and useless in any keep defense situation when a fulltank is part of the equation.
Instead of being a counter for the archer assist it is highly punishing for the solo player instead. The archer assist can just counter the block with higher numbers, the solo archer has simply zero chance to deal enough damage to any member of a group with a fulltank to get a kill (even if all healers are sleeping).
The whole mechanic is completely unreasonable, as there is nothing similar to protect players from the Hib stun&gun, or the Alb Wizard Bolt assist that do essentially the same thing, yet there is no AoE block that protects a whole group from the spell damage. You might as well remove Archers entirely instead of gimping the class to this degree.