Actually, I placed feature list in a sidebar. See the sidebar section in a Yaml in a top of a file.
I think features should be kept there but If you think they are not as visible as they should be I'd probably update the layout

You mean the list starting with * Combine **all testing levels** (acceptance, functional, unit)?
These are general Codeception advantages (not features). I'm talking about specific features of the Symfony Module. This is the first question people are having: "What is it?" The rest ("How can I get it?", "How does it work?") comes later...

Ok, let's do it this way :)

Well, I think it would be better to keep the sidebar as you had it. And enter my feature list on top of the regular page, above "Install". Reason: Sidebars are good for additional information, but this is core information (i.e. "What is this all about?")