Avoid edges of navmesh

I'm attempting to get my navmesh agent to stay away from edges in a bid to make the path finding smoother and allowing for space on turns.

The attached image shows what I'm trying to achieve.

I'm struggling to find an elegant way to approach this and before I go straight into the overengineering.

Any thoughts would be welcome.

The only way I can think to do this would be to use object avoidance for entities on the edge of the navmesh and set the agent radius to something high.

 

You could also just use regions to assign a higher cost to the edge areas. That way they're still accessible, but preferrably avoided.

 

How would you dynamically identify the border of a NavMesh and apply an area modifier to it? Is there a built-in mechanism?

 

Not as far as I know, I'm afraid. That'll be manual work.

 

Well, it would involve creating a separate mesh out of the area where two potential NavMeshes do not intersect. This is still, probably, more difficult than identifying slopes and placing navmesh obstacles on them, with a large radius. ;]

I might give it a go though, thanks for the suggestion.