I dont really see the need for this change. I dont recall any major threads where players complained about arrows. And when arrow prices tended to rise it was generally because archer was flavour of the day for clearing new content.

PvP is going to be very boring with unlimited arrows. I thought they might have limited players output in pvp (melee/magic and ranged) so teams think strategically, now it all sounds more hack and slash until the last guy is standing.

What will be the effect on gathering, crafting and markets? Granted carpenters may have a new role in houses/furniture, but then no one has a niche to specialise in.