I want the option to be all stealth.
Not me. I liked the fact that Thief games are 99% stealth, because Garrett is not some badass warrior, so it makes sense that he would avoid confrontation.
Sam Fisher on the other hand is a pissed off ex-agent with a serious axe to grind. All stealth would be completely against this theme, not to mention extremely unsatisfying imo. Still, I'll never disagree that more choices are better.
“The greatness of a nation and its moral progress can be judged by the way its animals are treated.”
- Mahatma Gandhi