Subsite Navigation Modification

I have a site (lets call it site "A")

Three sites fall under site "A" and they are…

1.      Subsite 1
2.      Subsite 2
3.      Subsite 3

Currently, if a user goes to site A they will see the tabs along the top for the 3 subsites.

Now here is my idea and where I’m looking for some input:

I want the homepage of site A to act as a link to the 3 subsites with a banner or placeholder or something of the ilk at the top that displays the site name (Site A) and it's POC (Point of Contact). Beneath this would be three seperate boxes each representing one of the 3 subsites with the subsite name, POC and team members listed. Each box will act as a hyperlink to the applicable subsite (This would effectively remove the need for the tabs at the top of the page. How would I accomplish this? Is there a webpart for this funtionality or would I modify a contact list or announcement?

I've attached a very basic visual of what the Site "A" page would look like.
Site-A.docx