Ferodo has a similar diagram but it doesn't go all the way down to cold temperatures:
http://www.ferodoracing.com/products...e-pads/ds1-11/
I'll need something that works immediately at low temperatures, so according to your diagramm, this would be HP+ or DTC30 maybe.
I've mounted new coil overs and they have very little droop, so I'm worried that the ice mode issue could get worse and think it could be somewhat mitigated with higher coefficient of friction pads in the rear (I'm already treating the brake pedal like a raw egg and never get the ABS to engage).
http://www.ft86club.com/forums/showthread.php?t=75598