It would be GREAT if we could add a token to a program that has a LP or multiple LPs that would allow you to fill out page meta tag details. Im not quite sure if "tokanizing" page meta tags is possible, but thats always one thing I forget to do!
Yes, if you want to train all of your marketing users on how to use the landing page editor you can definitely go this route. However, your average beginning Marketing user would have a much easier time creating this page with the method I use.