Imagine that...
"- how about creating two seperate subtitle tracks, the default one will display the subtitles (for greedo/jabba) just below the picture, and the second one will display it on the picture."
Why bother? SW is 2.35:1. There are still black bars in a 16x9 conversion to place the subtitles in. Mine are just below the picture, so different ratios don't affect it.