Do you get any benefit for having finished the first game and having the data from it?
Yes, though it looks at your trophys, so now worries if you deleted the savegame...
Finished the game on any difficulty: 1,000 starting XP
Have obtained a Good or Evil Trophy: Start with level 1 good or bad karma
Have found 25 percent of the blast shards: Energy core (health bar segment)
Have found 50 percent of the blast shards: Two energy cores
Certain unspecified "decisions" also result in changes in side missions, Dead Drops and dialogue