Recently I've completed my first heist. I used the better hacker, the worse driver and the worse gunner(or whatever he's called). As a result I got:
1) we had enough time to steal all the items(thanks to a good hacker)
2) one guy fell of the bike when we were running away. Result: lost around 1.4 mil(down to 2.8 from 4.2)
3) the driver wasn't sure where to go, so he chose random direction, which appeared to be the right one.
And 2 of the crew got +25% skill I think after the completion of the mission. Looks like the one who fell down with a bike got nothing.
So the question is: should I take the better ones from the beginning or is it better to take the worse ones and let them become better?