And why exactly do you think it is necessary to take that stun away rufio ? Because it is one of the few things left that ranged classes can do to harm you ? Has it ever occured to you that, in order to achieve that ability to rangedstun you I have to throw away about every other capability which is important in this game like mobility, survivability, dps, etc. ?
There were times where piled up ranged had some battlefield value, acting as some sort of "checkpoint" for your team, bringing some kind of structure into the chaos by creating fields of denial for the enemy that had to be dealt with with a sense of tactics. Even so when it were people that didnt train with a bow for 10 gens minimum. Now its like "Yololo look, a bunch of archers ! Just ignore them until we finished their melees and then lets sheath our weapons and punch them to death because they cant do shit to our armor anyway !".
This stun is probably one of the last thing that gives dedicated ranged like archers a reason to be in this mod, although, with the buggy hitboxes and laughable arrow speeds we have now its not like you make use of this staggering mechanic consistently from a distance.