That’s a good idea. I’ll play around with that a little.
I may have come up with a solution to the earlier problem by slightly slowing down the few seconds of Watto speaking. It’s not perfect but at least his mouth is moving for the whole line. A little inelegant but I’ll keep at it.
edit: Here’s another go at the Watto scene. It includes the slowed down version of him speaking (again, not perfect but a slight improvement) and the lines you mentioned about him having sold Lars something. I couldn’t construct a line, but one nice thing about Watto (in both movies) going in and out of Huttese, I was able to put in something subtitled. I liked your idea of implying its Luke’s future T-16 skyhopper but I feel like you’d hear the “T” even in Huttese and I was a little limited in what I could use. Either way, it kind of accomplishes what you were suggesting