The longbow has different appeals to it, it's bad for ranged duels, but I am told it is hardcoded that the longbow draw may be held for longer and hence is better against infantry. So I don't really see a problem with the longbow with these changes, I picked up a longbow yesterday and did as good as with my Rus bow, it seems still to be very effective. It certainly destroys high PD builds, which is probably for the best, that's what a crossbow is for.
For crossbows I think this nerf was very bad since they don't really have the same chance for the headshot as others. So maybe it would be a good idea to increase the damage on the arbalest so that it is still the beast to be scared of as is was pre patch. I do not play crossbow very often (I only have a level 25 alt), so I do not know what needs changing to balance them. However it is quite obvious that crossbows got nerfed to an almost unusable level, in some cases it fixes people bringing a crossbow for a sidearm which is good, but it also screws up the pure crossbow users.