Giving more money to authors isn't necessarily a bad idea in itself, but sadly enough lone authors would probably make even less money if it weren't for the support of editors to make the book better, publishing companies to make the book what it is and in the case of pre-established authors sometimes even give them an advance so the author can have food and lodging while writing.  Then there's the agents which find and negotiate the deals for the authors, and finally some publicists which make sure we hear about the book, organize the various presentations, book fairs, tv shows, etc where the author will present their book.

There's a lot of cost in making a book, and any system which reward only one of those parties isn't recognizing the hard work of the other parties.

Unless of course your website decides to buy unedited manuscripts, and you decide to do the editing, publishing, publicizing, etc yourself, then yes, cutting the need for middlemen.  But if you use the work of middlemen and refuse to pay them for their time, efforts, investments, and RISK (there's always a risk involved in publishing any book, that it might flop and not sell well enough to cover the costs), then you're not doing anyone a favor with your system.

Anyone who feels like you could just as well download the book on a torrent and send money in an envelop to the author directly.