It’s my personal opinion, but I don’t feel like we need to see Anakin or Padme get brutalized for me to sympathize with them. Slavery is wrong in and of itself. Even if their master treats them well, they still own them. As a slave, Anakin would never fulfill his potential or make a life of his own, he’d simply be Watto’s property.
Similarly, I don’t feel like I have to see mass murder for me to think that the Trade Federation invading and occupying a sovereign planet is wrong, either, or that Padme’s situation of having to deal with her planet taken by force isn’t dire without seeing it. There’s a couple scenes where they say the Trade Federation is trying to make the people of Naboo suffer to coerce her into making the invasion legal, and maybe it would have helped to show and not tell, but we do still see some of the effects of the occupation, so it’s not like they don’t show it at all.
I also sort of like how young they made kid Anakin. There are some scenes where I feel like it would do the movie well if he acted more mature. But I like kid Anakin’s innocence, and, I’m not sure how to articulate it, but this feeling of Anakin’s life being a blank canvas that I’m not sure would be there if his age was bumped up to being a teenager or older like a lot of people suggest, where he’s already well on his way to being a grown man. Or maybe this is all nostalgia, though. When I was a kid I loved kid Anakin.
I agree though that Obi-Wan’s kind of lame. The older drafts of the movie where Obi-Wan and Qui-Gon are combined into the same character sound really interesting, and I wish something like that was preserved. Either that, or Obi-Wan was the proactive character and Qui-Gon was another apprentice of his. It is what it is, though