IronArcturus: Is it possible to get Sin to automatically log in the default user? I don't like having to manually "log in" at the main menu, since the game keeps switching resolutions back and forth. I tried deleting the "blade" folder from the game's player directory but the game just recreates it.
I think I have an answer for this. I'm assuming you are using the GOG version (this may work for other versions too but I don't have other versions to test with).
1) Navigate to: ...\SiN Gold\SiN\base
2) Open the autoexec.cfg file in a text editor (Notepad, etc)
3) The last line states menu_logon which means when the autoexec is called (as the GOG shortcut does) then it opens the login screen. Change this to menu_main so that it goes to the main menu screen instead. Now the game will always load with the default blade profile.
So, provided you use the default profile this will solve this for you. If you use your own profile, though, well, you could try deleting all other player profiles so that there is only the one that you use, but I don't know if this would work.
EDIT: Note that for the Wages of SiN expansion you need to edit a different autoexec.cfg. This one is located here:
...\SiN Gold\SiN\2015