Yes, of course! The point here though is that a lot of tells go through  
ActorSelection especially with clustering, so it makes sense to handle it  
in a hand-crafted way. An auto-generated format for SelectionPath would  
probably end up nesting them, since it is a linked structure. I encode  
them as sequences here for faster encoding/decoding. For other messages  
this is probably not needed.

But this is a proposal PR, so we should think about alternatives.