You have given us no context as to what your wiki is about.
Even if we knew what your wiki was about, there are too many different ways to layout the first page that is really just comes down to personal preference.
If you have at least some idea of what you want on the front page, please tell us we we can narrow down the options. If you have wikis with features your want to copy, please link to them and tell use what you want to copy.
Apologies I never got back to you. I was busy for a while and then I saw Fandyllic's reply. I figured nothing else needed to be said at that point.
I am posting now because I just checked out your wiki. I feel I need to warn you that your change to the local navigation header would probably be considered a customization policy violation. You may want to consider removing that CSS.