This couldn't really be added into the prequels in the form of a fan-edit, but it's an idea I've had for a while and thought it'd be good to get some feed-back on it.

I personally think that the creation of the Death Star should have had much, much more foreshadowing in the prequel series. If it were up to me, the Republic would be visibly crumbling very early into the series. The first "Death Star" plans would have been made by the Republic itself. Why? As the droid armies are increasing in size, and the Clones (though more intelligent and well-trained) are becoming outnumbered the Republic prepares to create a space station capable of wiping out those worlds on which the droid armies are being made. Concern is swept aside as Palpatine argues that many of the worlds creating the droid armies are in fact mostly unpopulated moons and factory-worlds, their destruction will not mean much he says.

Of course, Obi-Wan is incredulous. He simply cannot believe that things have gone this far. "They'll never do it", he convinces himself. It's only until much later in his life he realizes his grave misjudgment as he recognizes the same space-station that was proposed all those years ago whilst being drawn into it aboard the Millennium Falcon.

Okay, that simply cannot be added using a fan-edit but it's just one of many ideas I have in my head concerning a possible alternate prequel series. I just felt like proposing it somewhere.