acsses nodes also help to esp once u get to a higher leve and go downtown they give out crazy amounts of xp u gotta look for gang mamers across the city for the keys
Because the hacker tree was overpowered in the old combat system the new combat system has a less powerful hacker tree. I think it still is a good tree but most people go operative now.
Why you want to level too fast? Doing that you are loosing most of the content: constructs, hideouts, neighbourhood contact missions, etc. Then you hit level 50 fast and complain about no content...