Something else that seems to be emerging from this accident is that the collision may have happened with one aircraft conducting a go-round. It really is something you should consider on any approach, what will I do if I go round, and is the missed approach path safe. IFR it might be a thunderstorm in the MA path, hold until its clear, it might be traffic in the upwind path during a visual approach, terrain, wildlife, weather. Have a think and plan for what you will do to reduce the risks, if the plan is uncertain, don't approach until its clear, don't put yourself in a 'land or else' position....
Even during legal LAHSO operations the active/hold short aircraft is not committed to land, they can go around at any time and the tower is meant to give them traffic avoidance advice.
Do not perform quasi LAHSO OCTA, no problem saying you will hold short, and when you are stopped short of the other runway the other aircraft can depart, but definitely do not do it simultaneously assuming the other guy can stop, or wont go round.