I got my set today though. Despite having only a kinda resemblance to Biehn the Reese figure is very nice. Glad to finally have a 1984 Reese in the collection, hopefully HT will follow suit.
The Tanker Truck pursuit T-800 is great, I love it. T-1000...is what it is.
I can think of these remaining figures they could do from the classic films assuming (they won't touch T1 Sarah and T2 young John):
Eye surgery T-800
2029 Reese
Factory Reese (different coat)
Split-down side T-1000
Exploded T-1000
T2 Sarah (steel mill version personally preferred)
Though perhaps they'll be calling it a day on the Terminator films now.