I was meerly playing it for comedy, so I won't say too much, but 2) That doesn't make sense - nobody, literally nobody, was sat in that room saying "You know what, I bet that's not the queen... that one over there is the queen... oh she's cleaning a droid? on second thoughts...." just being in disguise is surely enough! You don't need to make the poor actually clean do manual labour!... this is without getting into the fact that there is no reason whatsoever for her not to be the actually queen in that scene - as she's not under any immediate threat... which makes me believe she's probably never the queen... lazy bitch. I'm not complaining though, as it's another bit of superb unintentional comedy
and 4) Exactly, which makes him telling the Trade Federation to make sure she doesn't leave the planet all the more baffling...
If you treat Phantom Menace (haha, menace... that's basically like calling it The Phantom Pest... which would have at least had aliteration working for it) as an unintentional comedy, it's great fun.