I'll add vote number 3 to this (4 if I am allowed to raise both hands).
The Task to Set Job Variable requires you to explicitly select a job from the drop down list. I would like to see a default entry of "this" job. Having built some large jobs with many tasks, I've been quite successful in allowing for cloning jobs and limiting my required changes to the job variables. However, cloning a job with the "Set Job Variable" will result in the clone keeping the original jobname and variable, forcing me to manually go in an update the individual task.