Hello! No, you phrased your question pretty politely! I don’t mind giving my insight :)
I don’t think Rapunzel is really that into adventure; the entire movie of Tangled has her wanting to “see the lights”, because she feels they’re significant, as they always happen on her birthday.
I wouldn’t say she’s self sacrificing either, because there weren’t really anything to support it? She stays in the tower because she was loyal to her mother, but as you can see during her internal fight, it didn’t make her stay in her tower forever; so we can’t say she’s self sacrificing for the sake of Mother Gothel. She only did a proper “self sacrifice” for Eugene/Flynn, but if you look at it, her situation was already pretty miserable. It was have Eugene die, and her forever struggling to fight Gothel off (with no guarantees of a successful escape), or save Eugene and go with Gothel quietly (maybe plan an escape secretly). Might as well save a person, right?
I feel Ravenclaw would value her imagination and artistic skills more than Gryffindor would. I’m not saying its not possible for Rapunzel to choose to be Gryffindor, and perhaps in someone else’s headcanon universe, she’d boldly make a decision to go to Gryffindor. But here, the reason why she’d accept the Hat’s decision to put her in Ravenclaw, known to many as the house that values brilliance and creativity, can give her a bit more confidence in herself.
I think a life of being put down by Gothel has got to be a bit of a spirit dampener, cheery as Rapunzel is! (perhaps the bit where Gothel says Rapunzel isn’t very bright or her sarcastic lines that ‘Rapunzel knows best’ struck a chord in me, and I felt like she needs a boost in self worth)
did that make sense? I’m not if its coherent, my thoughts are kinda everywhere all at once x’D Let me know if I should clarify anything!