I just wanted people to know that work has been ongoing with DataJack. I just finished up another level, and I've decided that I've become proficient enough to go ahead with the between-missions screens: your apartment, the shops, etc.
The idea is that after completing a mission, you have time to walk around on the streets of Neo-Boston, making shady arms deals or buying new hacking software. Then you check your computer to see what new missions have been offered.