Things I'd love to see in a future fan edition of ANH:

Enhaced screens and displays (computers inside the Death Star look odd).

Insert some PT SDs and stuff. There could be two excuses to do so:

The first one, to insert some old imperial PT stuff, could be that Tatooine is a planet really far from the center of the Empire, and as it's a rather "quiet" planet,with no intervention of the Empire , they could send some old ships, reserving their ultimate stuff for areas which really require them. There's a quote from EU (know this isn't cannon but it's just to show the spirit of what I'm trying to say) from a trooper of the 501st:

"For months we had treated the Rebellion like a disobedient child"...

Untill the destruction of the DS, Rebellion was kinda little, little threat to the Empire.

The other excuse, and still following the spirit of that phrase, is that, as the Rebellion is at the time of ANH a little, clandestine and poor organisation, they couldn't select their ships just as if they had much money. They'd just take any "collaboration" they could, and some old Republic-time junk could do.

http://img714.imageshack.us/i/tatoot.png/

This could even enhace the feeling the OT gives us of "used technology" in the future.

And to finalize, another thing that could do is including a scene after de DS destruction, of Vader aproaching Coruscant and giving explanations to the Emperor or something like that