I can only imagine what goes through the mind of a brand new DCS player trying to join a multiplayer game....
OK, select role....I'll pick an F-15....clicks a slot....no response...huh....clicks again, again, again...nothing....is my PC okay?....tries scrolling the list....nothing....tries again...nothing...oh wait, it moved a bit....tries clicking a slot....nothing....won't scroll...is the game broken?....
etc