Ability to copy a page and ALL the child pages on the sitemap/tree view

At present you can copy (duplicate) a page in tree view and move it to somewhere else on the tree which is great however there does not appear the ability to copy a page and ALL of the child pages with it. It is a small thing but we have a lot of reused pages on our app and it is proving tiresome having to recreate the whole hierarchy again to map it out in the sitemap. What would be really awesome is if you also could add the facilty to easily show this is a duplicated page with only one master. Similar to what you have done with the container feature and the fact you can change the colours to work for whatever workflow you have. That would be really helpful ^_^ Thanks