My thoughts go to the passengers and crew of the airplanes involved.
But I can't stop to think after every accident what could we have done...
In my company we select the transponder ON when cleared to line up or Take-off, and we check for Runway/ Approach clear both visualy and on TCAS especialy in LVP.
1- Did the Cessna have the Transponder ON.
2-Would it be a good idea to ask all operator to select Transponder ON and not Auto when LVP in progress.