@ MajikMyst: There's no reason to cast Anthony Daniels since all he ever does is the voice for C-3P0, that's his thing and that's why we love him for it... as for the big name live-action actors you mentioned such as Harrison Ford and Mel Gibson... they're not voice actors, they're live-action actors... which means you'd be paying a tonne of money for their names and that's it. They aren't talented with voice acting like Steve Blum and Kari (I love Kari) Wahlgren are.
People do care about voice actors because a lot of people follow cartoons and anime and video games and recognise when their favourite voice actors are in those things. Just because you personally don't doesn't automatically cancel out their worth and talent as voice actors.
If they did get Hollywood actors to do the voices I would have scoffed at this entire project and said it was a waste of money and that they were mismanaging funds. Nope, the voice acting definitely didn't cost that much, but that's the beauty of it, they knew the right people so they could get MAXIMUM talent without busting their budget for it getting waste-of-time names like... Mel Gibson. Just because a voice actor doesn't get paid as much doesn't mean they have no talent. These are extremely talented people doing what they love to do.
As for the making of the game... No, it wouldn't be as easy as just making a few animation cycles, plonking down a few area maps and NPCs to randomly populate them. You'd have to take in a number of factors into account while making it including trying to predict what the player is going to do, if the area you've created is balanced enough, is it too difficult, too easy... does the area make sense, if I put this here, does it actually look like a proper landscape or does it look like I've just piled a bunch of random rocks here?
Sure, big companies have ways of automating the process by creating engines to do most of the work, but with this game, like any game, particularly an RPG, there are a hell of a lot of things to be considered and trying to balance all of those things is pretty difficult.
Of course, if it was as easy as you like to suggest, I'd be making my own indie-RPGs right now instead of typing these posts lol.