Still making it pretty, and it works better.
-switched from the dropdown list to the 'open file dialog' for choosing maps
Choosing a mod will:
-automatically set up the game tab to launch that appid (and launch option profiles don't change on mod switch)
-vmf folder will autoswitch to the mod's default
-choosing left4dead paths are also working, and the sdk button should launch authoring tools
-still need to setup profiles for custom mods (allow saving/auto-loading of profile between program starts)