After reading the blog post about new op-mode definitions i've taken upon the task to convert some simple commands to new syntax.
I've started with some simple commands in "vyatta-op". progress can be followed in https://github.com/runborg/vyos-1x . and i will make a PR soon.
Edit by @dmbaturin
This is the blog post in question: http://blog.vyos.net/new-style-operational-mode-command-definitions-are-here
Everyone is invited to join the effort!