Have you ever wanted to show a List that was created at the root level site in a sub-site? For example below we want to show the list "MyList" which was created in Site A in subSite B.
Site A -> MyList
Site A -> SubSite B -> MyList
To accomplish this, navigate to the root level.
Create a Web Part Page.
Export the Web Part Page to the Web Part Gallery.
Navigate to the page in the sub site where you want to see the list, and Add the Web Part from the Web Part Gallery
Now your list will appear in the sub-site.
I have ran into issues when using IE 64-bit. in particular with exporting Web Parts, and also with having the DataSheet View button enabled.
When you click on the Team Site link in Office 365, it takes you to https://sitename.com/SitePages/Home.aspx. The issue is, that we really want to go to https://sitename.com/site/Intranet/SitePages/Home.aspx.e.aspx.
To accomplish this, I added a CEWP to the sitename.com/SitePages/Home.aspx, that has a simple script that redirects to the page I really want to go to.
So now the obvious, how do I ever edit the page again? To do this I used SharePoint Designer. Simply open the site by placing the root url in the location to open input (sitename/SitePages/). From there I can now edit the page and the CEWP.