Heineke would be my starter if I was in charge....there is no reason why 2 RB's could not nhave 100 yards per game with the weapons we have.
The days of Matt Ryan havin 400 yards passin is over....we have THREE..3..capable 1000 yard RB on the team.
Don't know if I'd start him without seeing who else is out there first. Talk to some teams about trades etc. Might end up with him, but I'd look around and see if there was more reliable/talented alternative out there. He'd start over Ridder for sure.
Hate it for Ridder but his career is going to be a back up, if he has much of a career. Just too many mistakes... Perhaps he could work with a veteran (Matt Ryan?) in the off season and get better. Maybe he just puts too much pressure on himself.