Of course, a game with a lot of bugs is not very attractive. But even if FS fixes all the bugs, it will not prolong the life of the game if theres no new maps.
Its two different problems.
Theres a limit to how many times you can rewatch a good movie.
People will just get tired of playing the same maps over and over again. I understand that FS is not Valve with billions of dollars, I was just trying to state a fact.
Check Steam stats over the 100 most played games if you doubt me.