Mutt, I too hope you enjoyed your units!
To state that Boeing just 'build aircraft' is to denigrate a large part of the service they provide. Boeing do provide an analysis of take-off performance for any runway if you pay and there is performance info. available to enable any operator to check each SID route for terrain clearance and work out emergency turns/EOSIDs if required.
I say again, know how your ops dept calculate this, and follow the procedures unless you have a VERY good reason for not doing so. The thought of people 'spearing off' straight ahead because it seemed like a good idea at the time fills me with fear too.
The really difficult ones are where you have NO published performance data or SIDs and there that=airmanship.