Alright point-misser. Block/blade and DW are melee options. Archery is range. I thought that was obvious, guess not. Archery also does not require a whole extra tree, it really only need the damage boosters to be fully effective. What a vitrolic post to have and yet to include no new material to the thread.
Speaking of missing the point and adding nothing to the thread, did you know that the OP made no mention of needing ranged damage? Perhaps the OP uses Archery already, magic, companions, or even shouts. I'm pretty sure Archery is not required to be successful in combat, even at range.
Also, the three extra perks DW costs is little compared to five ranks of damage-increasing for Archery (or diving into the tree if one desires better competence), especially considering that Block is rather expensive, perk-wise.
Edit: And since you so obviously missed this point: yes, Archery is a whole tree unto itself. DW is not; it's a branch of a tree, no more expensive than, say, the Mage Armor branch of perks or the fire damage branch in Destruction.