lol no one in pvp wanted it to be 10m either. Same as the nerf to sorc/sages stun. No one wanted, no one asked. Just happened. Cuz the devs are...questionable in their reasoning.
Well not exaclty "no one". BW wanted to nerf Merc dps, so that was one of the ways they accomplished that. BW has consistently believed that Merc dps is overpowered. It still does. That is why they are constantly looking for methods to reduce Merc dps damage output. Forcing the Merc dps to get to close range to effectively attack the most common enemy healer (Op/Smuggie healer) forces the Merc dps to get stunned more, interrupted more and take more damage which reduces Merc dps damage output.