Hi, actually I am new and don't really have any experience about the game online... What I can propose (and you may excuse my bad English) is some historical facts about archery...
English LongBowers were used to shoot about 6 to 10 arrows in one minute with 140-180Lbs Bows. That's about one arrow every 6-10 secs, that's quite of slow,.. but try to pull 140Lbs of pressure with only one arm,... 6 times per minute, sometimes during hours.
But all this energy paid well such those arrow could even penetrate fullplate armors, only the scale mails were able to spread enough energy to avoid penetration (And we're not talking about distances)
Instead of that, and not talking about compound bows, we have now target bows from 15 to 60 Lbs and 40 to 80Lbs for hunting bows.
With those bows you can actully reach some good rate of fire, we're talking of 15 to 20 arrows per minute (not sustainable for long periods...), what gives us one arrow every 3 to 4 secs.
Of course, those arrow would never penetrate full plate armors,. and even Mail would offer good resistance.
Beside of that,... we have the Hungarian (or steppe) kind of bow. Laminated, composite and recurved. It alows to have an 100-120lbs bow with the dimentions of a short bow. Those bows were used in Cavalery Archer for there maneability and low-encumbrance.
Of course, and as their tension force shows, they were intermediate in effectiveness and shooting rate compared to the two other types.
My point in that to the game ?
Give Long and War bows high arrow speed and penetration and diminish considerably the rate of fire.
AND
Give Hunting and Short bows low arrow speed and low (or none) penetration but high fire rates.
And, if possible,.. only allow Horse Archery with Recuverd bows, with intermediate speeds and rate fire.
So, if you're Robin Hood and thing you can make and head shot 300yards away, don't even try with low powered bows,.. take your time with a long one.
If you want to spam crowds to lower the enemies health and help allies, take low powered ones,.. but dont' even try long range shoots or to one-shot anyone,....
That's my point.