The change to slayer arrows was an internal test that left behind a text error, and was noted by the devs as NOT being changed in game.
We have an AA in our guild that is never lacking for a group slot, so I think it may depend on playstyle, gear, and reputation.
Beyond that, a pure AA still gets all the perks of a Ranger that many melees don't.
My observation has been that many groups do not want ranged combat players, not necessarily AAs; it is just hard to separate them in an LFM.
That out of the way, I would be extremely disappointed if a rate of fire error was allowed to go live for Archers,
and would be curious to see if this same alacrity error is showing up on other enhancement haste boosts, Jorun' Collars, etc for other classes? Any monk stances not stacking as well?
Please, Turbine, as much as new stuff is nice, do not allow a broken mechanic like this one get onto live.
Seriously, mates, please.