Right now, nothing can counter big blob of ranged other than big blob of ranged. But if we're talking about lonely archers, there are many counters. I used to be decent counter in my days, it's funny how every archer is (even the best ones) an easy prey when they are alone. Of course, that only goes if their clanmates don't "cheat", ghost on teamspeak. And in last year or so that happened too often.
Back in the days, there wasn't much ghosting and my agi build was a lot faster than it was a year ago. Archers also had a lot less awareness than they have now. My sword hit harder and all combined it meant I could ambush the nest of archers and kill them all in few seconds. That was a decent ranged counter, sadly big shots decided to nerf that build repeatedly and now it's impossible to kill blob of archers but it's still effective against single targets.