This approach is particularly high threat, especially as the 3 degree path intercept is almost co-incident with waypoint RIVER. ATC often vector to space aircraft at exactly 5nm - they don't always get it right. The local guys are aware of this and many of us just go DCT RIVER if it looks like the intercept is going to be close. That's the threat mitigated for most types. Not sure if it's the same with the 787 - but I don't see why not.