I've done a little more reading and thinking on this whole RC thing...
The way I am seeing it right now is that the RC "position" (the convergence point from those imaginary lines), do not correlate to a raised or lowered RC.
The way I am understanding it now, is that a raised RC is increased resistance to roll (high RC, high resistance).
And the way to get more resistance is to angle it in on the inside so it pushes against the opposite side (I'm not sure if that sounds as clear as it does in my head though).
So more angle on the upper link will also increase the camber change during suspension travel.
This way I can see how through a suspensions travel, the difference in angle between the lower and upper link can reduce, causing the RC to lower (less resistance).
Any of this correct?
I suppose with my new understanding of it, I can see why it would be important to have a closely balanced RC front to rear, one end will roll a lot more than the other if they are too far apart.
But would be impractical or not suit real world needs to have them the same.