Bungie is going to do stuff no one has done before.

[Reasonable]

Well, given the hype is attached to senior animator it sounds like that's the area they think they are going to do something different. That would be interesting for Bungie as their animations are okay but far from the industry lead.

Like others though I suspect this doesn't mean they are actually going to do anything no one else has done, just they want to pump the role as it is going to be important.