The one thing that currently makes the Windows version of Scrivener much less useful to me than I thought it would be, is that you can’t set default text preferences (font, line spacing, first line indent etc) for a single project.
I have two different types of project that I would like to use Scrivener for, but they need to have different default formatting. This is currently not possible, as I can’t change the default text preferences on one project without also changing it for every new page that is created in other projects. This means that, in order to use different formatting for a particular project, I have to manually change the text preferences on every new file I create within it.