"You go straight out for 11 miles".
Not with an engine failure unless you are planning to do some mining !!!
SID's from RWY 15 have a 400' or DER turn to the north east. I've worked for a couple of airlines operating into CNS in both A320 and A330 and both had a specific E/O hdg to turn to and with both, you had to keep the T/o flap until reaching the heading.
Airbus just build the aircraft, they leave specific engine out procedures to your performance engineers.