Decent WP theme for an author

Why do nearly all WP themes have horizontal shaped images? I’m a writer and I can’t find anything out there of decent quality that supports vertical book cover images. When I do find a vertical image theme it’s usually for photographers and the click through opens up a larger version of that image rather than opens up a page. I’ve bounced through countless themes now both premium and freebie. I have good css knowledge but it is frustrating. So if somebody fancies doing a WP theme for authors to showcase their books let me know.

Check this out:

http://themeforest.net/item/the-novelist-responsive-wp-theme-for-writers/526345?WT.ac=portfolio_thumb&WT.seg_1=portfolio_thumb&WT.z_author=theMOLITOR

I think you could place you book covers instead of the illustrations on the demo and use your book samples as the content of the post.