Turns
john_tullamarine, isn't this why operators will (and have to)promulgate Emergency Turn Procedures away from limiting obstacles?
Also consider that the acceleration phase if commenced at a higher altitude than normal will still intercept the final segment on the same gradient - just at a higher point.
Draw a diagram and extend the second segment up a bit - draw a line across to meet the final segment. It will provide the same distance for acceleration without compromising any segments.
If clearance was compromised, no operator would consider accomplishing drills in the second segment!