Different index.html home page

How is it possible to have a different already existing html file on the server for the index.html home page, so that it is not overwritten when we Sync our website? I mean can we set the home page of our blog as a different file name like blog.html or something or any other setting to do this? If we can’t do this, please do add this very simple yet useful feature in next version. There may be many reasons where we would want an individual and separate home page. I know there is an option to set a post as a home page. But please add the option to set the slug of the home page something different to index.html so that we can use our own custom home if we want. Thanks.