Hmm... I've never really though about these questions.
1)My ideal protagonist (assuming the story around him is well written and well executed) would not have siblings.
2)His parents can be alive or dead, but in either case he shouldn't have (or had) good relations with them.
3)I personally like more realistic stories so I would prefer no super powers be they Sci-Fi or fantasy. However by no means do I want a mundane self-insert protagonist. I want an interesting character who had rough experiences in his past that either made him fucked up, or that scarred him as a person.
4) Rich! I want a story that has the main protag involved in the intrigues of upper society. I want him involved in economic and political manipulations.
5) Generally speaking, I would want my protagonist trapped to circumstances that he wants to break out of. However if my wish from number 4 is granted, meaning that he is rich, then I would like him to be free.
6) I want society to see him as a great person, but for him in reality to be a far more shady and complicated. I want him to use his good public image for deceptive means.
7) Neither a scientist or a criminal. But I would like him to be a son of an oligarch, be he the son of a son of a wealthy politician or capitalist it doesn't matter which.