"A small comment about the Spanish dialogue: for me this works well when the characters speak a foreign tongue among themselves, but I would prefer if they switch to English when they address an English-speaking character. Again, as someone else pointed out, the alternation of languages in a conversation in your edits has an unintentional humorous effect, as it suggests that everyone has Babelfish in their ears!"

Then you run across the problem of having a person speak the same in English and Spanish.

"Maybe you could replace Yoda's "Nooo!" with Vader's from Ep.3
Couldn't be much cheesier, could it?"

That's actually an excellent idea. I like the AOTC "Nooooooo". That being said, I'm curious to know whose voice it is,

BTW, for those who are interested:

Another plot device may become apparent in Episodes II and III is the answer to the question of why Qui-Gon Jinn doesn't fade away? Lucas suggest we will learn the answer in an interview:

The [fact that] Qui-Gon [does not disappear] you will discover as time goes on. There is a whole issue around that and the ability to disappear. The key line to understanding this is when Ben Kenobi tells Darth Vader, "If you try to strike me down, I will become... ...more powerful than you can possibly imagine." So, that's a key line. And it'll be explained as we go along. (6/18/99).

Further evidence that this will cleared up comes from an interview with George Lucas in Starlog Magazine Issue 300 (first reported on the Force.net):
STARLOG: And isnt that Qui-Gon Jinns [Liam Neeson] voice we hear during Anakins attack on the Tusken Raiders who killed Shmi Skywalker [Pernilla August]?
LUCAS: Thats a fan thing, isnt it? Its actually more than that. Its a plot point. All I can really say is that youll find out [more] in the next film. If you thought really hard, you would probably be able to figure it out, but it really is a set-up for the next film. Its connected with the whole ability to be brought into and become a part of the Force, but still be able to retain YOUR ability which, up to this point, Anakin couldnt do. We talked to Liam about [recording new dialogue], and we went back and forth [about it]. This [dialogue] is something we already had [from Menace]. Next time will be a little more complicated. (7/20/02).

Even more clarification comes from the Yoda Entry on Star Wars.com:
"While meditating, Yoda had felt a traumatic event befall young Anakin Skywalker. At that very moment, he also heard the voice of Qui-Gon Jinn, a Jedi Master slain a decade previous. It was impossible for a Jedi to retain his identity after becoming one with the Force, yet he had heard it. "

The Force.net contributor Darth Fred comments:
So apparently the Jedi didn't know you could come back as a shimmering blue light at the time of Episode II. Interesting. As Lucas has noted, it's a trick Yoda teaches the Jedi which we'll most likely see in Episode III. (7/20/02).