Nice! I haven't dabbled with it yet, but it'll become my perlbrew default very soon. I just updated my berrybrew fork to include 5.22.2, I'm hoping Strawberry will get a 5.24.0 cut release soon so I can use it on both win and nix.

The only thing I've dabbled with is post-deref (in its infancy), which I don't actually like that much (I find that the deref should be the important piece in something, so that what you're dealing with is easily visible on the left-hand-side), but some of the more subtle fixes and updates look promising.