Very few aircrew every jump for fun.
and I don't blame them
but even with the extra possibilities of an expensive injury, it seems like it might be a useful addition to the curriculum. What about E&E training? doesn't that hold the risk of injury? and is it ever considered fun?
While a square chute and a high abandonment may help you steer away it probably unlikely that you would see the bad guys on the ground early enough anyway. For a last second abandonment you need as much chute as possible and no finesse.
another fair point, but a square might afford the opportunity to land in an open field instead of a tree, powerlines or next to a snarling doberman.
Another consideration may be the chute pack size. Certainly, IIRC, the Army chutes were 28 foot diameter (and greater load of course) compared with the aircrew ones at 24 feet. That works out with a difference in size of about 10%.
Possible, but new zero porosity fabrics not only pack down into a really small volume, they also provide the same 'slowing capabilities' with a much smaller area of fabric.
btw, just playing devil's advocate, s'not meant to be an argumentative post