It's not so much about an expansion it is retaining subs. You can blow through this game like nothing then people complain that there is no content. So instead of making people wait for big expansions and pooling everything into it, they release it gradually over time as to keep people playing. With that said, I too would like to see a WoW sized expansion.
My rig load times are pretty awesome.
Rig is as follows:
Intel i7-3770
Radeon HD 7750 2GB
24GB DDR3 RAM
3 TB 7200RPM HDD
So in my experience, more RAM could do it.
Because god forbid OP to work for something. In order to get a promotion in a job, you have to go through the same mind dulling work ever day don't you?