Add "PC & MS-DOS" to the subscription spreadsheet download feature as an option for "Specific systems" or "All systems"

As an avid PC big box/small box collector, it would be immensely helpful to download and see all PC & MS-DOS games/prices/release dates in the spreadsheet export so that I can keep better inventory (using pivot tables and whatnot) of my current collection and ensure I'm using standard names for all games in my personal spreadsheets.