For instance, I'm building a Level 4 Seeker (Ranged Arcane Archer-esque class) who has an At Will attack (Biting Swarm) that can be used "as a" ranged basic attack. I also have a couple of items that trigger off of these: the Weapon of Speed +1 modifier on bows allows you to make a Ranged Basic Attack as a minor action once per encounter--can I sub in the Biting Swarm for that? Similarly, the Bracers of Perfect Shot state that they grant +2 damage to ranged basic attacks--does that include Biting Swarm?
My initial inclination is to guess yes--the Character Builder adds in the bracers' damage to its calculations for Biting Swarm, and wording would make it logical--but I thought I'd check. Apologies if this is an old-as-sin topic, but my Googling didn't turn up a lot of conclusive info, so I figured I'd turn here and use my first post on this!