Well, I have also noticed that various actors/actresses from Bones have appeared in Joss' work. However, I don't really think that there is a connection although you do put forth a persuasive point.
As a bit of a TV junkie, I tend to notice shows that share a lot of similar actors. Bones/JW work would not be up there on my list however, despite them sharing some similar faces. Apart from David, none of the other Bones regulars were regulars on any of Joss' works, they were only extras.
Just to pull a random example out of my hat, if you watch OZ and Law & Order (mainly SVU but include all 3 series for the point of argument) the amount of actors who appear in both (both as main characters and extras) is astounding. I have always believed that Dick Wolf (the creator for SVU and the other L&O series) was probably a fan of OZ to some extent, because pretty much every episode has an actor from the HBO show (excluding Christopher Meloni, as he is in basically every episode of SVU).
Back to the original point, it was only while rewatching episodes of Angel, Buffy and Firefly/Serenity after I became a Bones fan that I noticed that some of the actors appeared in both. Their roles in Joss Whedon's works were minor (apart from David obviously) so I doubt that Hanson would have noted their brief appearances.
As a bit of a TV junkie, I tend to notice shows that share a lot of similar actors. Bones/JW work would not be up there on my list however, despite them sharing some similar faces. Apart from David, none of the other Bones regulars were regulars on any of Joss' works, they were only extras.
Just to pull a random example out of my hat, if you watch OZ and Law & Order (mainly SVU but include all 3 series for the point of argument) the amount of actors who appear in both (both as main characters and extras) is astounding. I have always believed that Dick Wolf (the creator for SVU and the other L&O series) was probably a fan of OZ to some extent, because pretty much every episode has an actor from the HBO show (excluding Christopher Meloni, as he is in basically every episode of SVU).
Back to the original point, it was only while rewatching episodes of Angel, Buffy and Firefly/Serenity after I became a Bones fan that I noticed that some of the actors appeared in both. Their roles in Joss Whedon's works were minor (apart from David obviously) so I doubt that Hanson would have noted their brief appearances.