It is obviously necessary to add on in satellites if you're right on the average stack or below to give you some additional hands, but at what point does it become -EV? Should you still add on if you're double average stack? Or should you add on regardless, as the sats always come down to outlasting your opponents....
Also what is adding on going to do to your long-term ROI?
Note, I'm talking strictly about turbo sats here.