The career mode is server side for one reason only $$$

[Mooncatt3953]

@pvaiko1203

then the big, million dollar question is, once again, why not give access to the missions outside of career mode?

@Mooncatt3953

The whole idea of a career mode is to give you something that is unique and rewards the player.

I already gave you a reason. It may be the true answer, or it may not. You may not agree with my answer, but that does not make it an invalid answer. I’m not even saying I agree with it, but only playing devil’s advocate. You wanted a reason, I gave you one.