A horrible accident...I can't imagine how horrible those last few minutes were for the crew...
I have seen EVAS mentioned a couple of times in this thread. The solution to smoke in the cockpit has been around for years and it works. We have it installed on our aircraft and I've practiced with it in the sim. If the jet is flyable and you are in a condition to fly, you can.
EVAS - Emergency Vision Assurance System
Basically, it is a low-pressure clear bag that inflates in front of the pilot and presses up against the instrument panel and the window. Don your smoke goggles and oxygen mask, press your face against the bag and you can see through the clear air inside the bag enough to fly the jet. When not in use, it stows in a box the size of a Jepp binder next to your seat.
Time will tell whether EVAS would have made a difference here.
Best,
GC