No, when its done right like Fallout 3 (point lookout, broken steel) it adds to a game
No, when its free and it improves the game drastically (Mass Effect 3 multiplayer)
And
Yes, charging people to unlock shyt already the disc like Soul Calibur 4 (darth vader/yoda)
Yes, when it could have been on the disc from the jump but you try to charge for it SSF4 arcade edition