I don’t think anyone is really understanding quite properly. I have the same basic need with a small twist. I have a feed to my homepage from my blog.
Blog
Homepage
The homepage feed is based on Google’s Feed API. I would like however to be able to select a blog post as my feature on the front page above where the feed of recent data is coming in. Right now there is currently a banner there that leads to the post that I am interested in having as my homepage content.
Is there some plugin or something that would allow me to place some code on my homepage and then select a post for it to display within that outside code? For instance if I wanted a post that I made 3 posts ago to show up I would go in to WP admin tool and select that post and it would show up on the homepage until I defined another post to take its place.