Yeah, creating an anamorphic transfer is the only thing that could be improved upon. And I'm not even sure it's possible, seeing as the Definitive Laserdics aren't anamorphic.
The quality of all these transfers is limited by that of the Laserdisc (the Definitive edition seems to be the favourite). From what I've seen, the ones TR47 has are nearly identical to the Laserdisc.

It'll be interesting, once the offical SE DVDs come out, to see what kind of a difference in quality there is, and whether anyone tries to combine an OT Laserdisc transfer with the SE DVD transfer.