Are Archers really complaining about a 15sec recast double attack? You 30sec recast on triple attack would be a nerf from the current set up. In 30seconds currently I can fire 4 arrows, with your way I can only fire 3. If you are pulling with Multishot now, its pulling like with barrage from ffxi. They changed the way hate works so starting with Multishot isn't as smart anymore.

Think of the alternative, they could have removed Multishot from the game. Multishot is not the end all be all of Archer, we are still the top DD class and got our ws dmg buffed. Also if you are hitting Multishot + buff then waiting to hit Multishot again you are slowing your DPS. Archers were not nerffed.