Most of the balance issues and complaints/suggestions come about because of the PD system. People look at bows, then look at crossbows and then obviously try to compare them.
Change the PD bonuses so that they up your speed/hold time with a bow, whilst removing the accuracy nerf and damage/arrow speed bonuses and you will be able to more easily compare bows and crossbows which if they truely are balanced people will be able to see.
It also makes sense. The current system of using a longbow works like this
PD5 = damn i'm not strong enough
PD6 = Yeah, it works! I can now use my 140lb Longbow
PD7 = Wow my 140lb Longbow has just morphed into a 161 lb Longbow!
PD8 = Damn! Where did this 195lb longbow come from. Its amazing
A more realistic system would be
PD5 = damn i'm not strong enough
PD6 = Yeah, it works! I can now use my 140lb Longbow but its a bit of a strain and takes some time for the reticule to get to its smallest and it doesn't stay their for long
PD7 = This is getting a bit easier now, the reticule gets to its smallest a bit quicker and stays there a bit longer
PD8 = Now we're talking, i'm strong enough to pull the bow back quite quickly so that the reticule gets to its smallest nice and quick and then I have a decent amount of time to pick a target.
PD_bow_requirement_+4 = min time for reticule to get to its smallest and max time that it stays there.
This system would encorage bow users to go beyond their bows PD difficulty to get the longest time to aim and therefore make it easier. This means people will either stick with low PD/damage bows or really sacrifice Agility/speed. Good bow users meanwhile might accept the shorter time they have to aim & fire which will give them a nice reward for their skill.
This would also open the way for a few new bows. Same models but a PD 5 longbow and a PD 7 longbow would give some more options for people and mean they can customixe their appearance a bit more.