So alot of people complain about archery for stupid and wrong reasons, like horseback archery. I'm an archer and my job is alot easier if we are both on foot than both mounted. And that running side to side video...
But I do agree combat could do with some rebalances, so I'm suggesting a few changes which together balance combat in a rock paper scissors fashion.
First Shields should have armour values like armour, EXCEPT they only count vs arrow damage when shield up skill is active. This is conditional nerf to bow damage, but which makes sense. Shields should have low reflect but high absorb so they reduce arrow damage alot but break in 2-3 hits with good bow - leaving the target very vulnerable as they cannot use shield up ability.
But shields are already overpowered, there is no reason not to use a shield as a non archer. So along with this change we need new 2 handed weapon only skills which give them a significant advantage over 1h and shield users in mele. such as double MC wieght and such. anything that gives them a clear edge in extended combat, because right now 2 guys with shield up spamming sting is the definition of boring. Also add those godam sexy 2h swords from valhalla already.
So overall you have a combat triangle where archers have edge over 2h, 2h have edge over shielders, shields have edge over archers. Ideally neither is a complete win over the other, but it encourages groups to field multiple roles, and makes combat less boring.
I'd also suggest making alot of the most powerful melee moves not useable from horseback, as horses should be for chasing and harassing and balanced by giving a disadvantage in a toe to toe fight. So I would suggest shield up and any new 2h skills not be usable on horseback. Encouraging people to dismount in serious pvp, making being a rider in a fight more risky.
Lastly you could also reduce bone arrow damage somewhat and add metal arrows into the mix, so archers are more dependant on metal.