I'd like to leave my site definition without a default (usually default.aspx) page defintion in the onet.xml file. Purely because I'll be creating it all in code-behind of some application page I have. But when I remove the module defining default.aspx I can't create a site using that definition.
The idea is that I want to (in code-behind) create a homepage of a particular custom content type/page layout and populate some of it's fields so I need that full control.