I believe that the features you describe will be in the next release.
However in the meantime is it possible to use the layout/set feature (used for print friently pages) e.g.
/layout/set/{$layout_name}/content/full/1234 to achieve what you want to do?
I thought about it, and will use that approach for the time being. I'm not sure the concept for "My Site" and dedicated pagelayout should remain beyond the "first click". If it does, then all content/view/ templates should check which layout they are in and adjust the build-up of links to reflect the /set/pagelayout part.
Next week we should see with the first 3.1 beta if the nextrelease will make this easier.
