@GCRaistlin: Do have have some examples where first letters are converted wrongly to uppercase via hard coded rules?
About the profile on General tab... click the "..." button the make new or delete profiles.
The double-click on word lists feature are available in latest beta.
About MPC-HC, you can use the "MpcHcLocation" in settings.xml or just a subfolder called "MPC-HC" in the SE folder, using the installer should also work (MPC-HC does not really have an API - SE actually just steals the video from the MPC-HC UI) - but just try mpv
@Lucius Snow: Hm, that works fine here... how can I re-create your issue with video not opening? Can you give more information? Is it all .srt files or only some. Video type? Do you have the video window open?