I hope you're not referring to The Simpsons. :)
Actually, I mis-typed. PDB may do a preservation (he hasn't mentioned it) for his LD restoration. But, after all, he must capture it to work on it.
As for me, I'd love to do a rectification if I had more time (which would automatically include preservations of no-longer-available sources). My rectification would do things like:
[CAUTION: SPOILERS ... that will ruin your movie-watching experience! Quick! Avert your eyes from the following ... oops ... too late.]
.
• using the Taschen The Stanley Kubrick Archives book for color reference where lightening our Kubrick approved laserdisc (as I've already demonstrated) would approximate the Archives's on-the-set photographs
• correcting effects shots that start early or late
• unsticking the pen in weightlessness
• fix the wrong memory-slab slide-out; align slab stop positions
• align some readout re-exposures misaligned onto main photography
• eliminate vertical vibration in camera tracking
And that's without more research on what others have spotted. Sorry, Stanley. :)